Brilliance CT
TM
Brilliance 6/10/16/16P/40
64 (with UDMS or TDMS)
Big Bore
DMS Troubleshooting Manual
4550 193 09401
Revision C
This document and the information contained in it is proprietary and confidential information of Philips Healthcare (“Philips”) and may not be reproduced, copied in
whole or in part, adapted, modified, disclosed to others, or disseminated without the prior written permission of the Philips Legal Department. Use of this document
and the information contained in it is strictly reserved for current Philips personnel and Philips customers who have a current and valid license from Philips for use by
the customer’s designated in-house service employee on equipment located at the customer’s designated site. Use of this document by unauthorized persons is strictly
prohibited. Report violation of these requirements to the Philips Legal Department. This document must be returned to Philips when the user is no longer licensed
and in any event upon Philips’ first written request.
© 2008 Philips Healthcare
Philips Healthcare
© 2008 KONINKLIJKE PHILIPS ELECTRONICS N. V. ALL RIGHTS RESERVED.
Warranty Disclaimer
PHILIPS PROVIDES THIS DOCUMENT WITHOUT WARRANTY OF ANY KIND, IMPLIED OR EXPRESSED,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE.
Limitation of Liability
PHILIPS HAS TAKEN CARE TO ENSURE THE ACCURACY OF THIS DOCUMENT. HOWEVER, PHILIPS ASSUMES
NO LIABILITY FOR ERRORS OR OMISSIONS AND RESERVES THE RIGHT TO MAKE CHANGES WITHOUT
FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION, OR DESIGN. PHILIPS
MAY MAKE IMPROVEMENTS OR CHANGES IN THE PRODUCT(S) OR PROGRAM(S) DESCRIBED IN THIS
DOCUMENT AT ANY TIME.
Symbol Descriptions
Attention symbol
Radiation warning symbol
Laser warning symbol
Biohazard warning symbol
Magnetism warning symbol
Projectile warning symbol
Electrical warning symbol
Do not touch
Revision History
ECO #
H3001167
H3001844
Revision
A
B
Date
Comments
November 2007
New Release
October 2008
Modified the block diagram in “UDMS Image Quality Troubleshooting” on page 8
Modified “Brilliance 64 Image Quality Troubleshooting Rules” on page 12
Added a step in “Steps for Troubleshooting Center Dot and Button Artifacts” on page 49
Modified “Module Stability Data Collection” on page 59
Added “Module Stability Test Data Analysis by CT BU Specialist” on page 95
Updated “Processing Raw Data Received from Sites With V2.2.1/2.2.5/2.4.0/2.4.1” on page 96
Updated “Processing Raw Data Received from Sites With V2.3” and renamed it to “Calculating Results” on
page 100
Removed “Example 2” from the end “Results Analysis” on page 105, and appended its content to the start
“Results Analysis” on page 105
Added “Changing the Patient's Information” on page 101
Added “Encrypting a Zip File” on page 103
Added “DMS Data Collection Form” on page 104
Modified the block diagram in “Analysis of the Artifact on Clinical Images” on page 5
Modified the block diagram in “UDMS Image Quality Troubleshooting (for UDMS more than 6
months old)” on page 9
Added “Recognizing and Resolving Crosstalk Related Ring Artifacts” on page 15
H3001895
C
October 2008
Removed the following sections:
Appendix “Data Analysis by CT BU Specialist”
Appendix “Changing the Patient’s Information”
Appendix ”Encrypting a Zip File”
Appendix “Data Collection Form”
Added “Module Map Form” on page 95
This document was prepared by the CT BU Haifa Service Innovation Department.
For any additions, corrections, or suggestions, contact:
CT BU Haifa Customer Support Department
Email: helpdesk.ct.haifa@philips.com
Safety Information
To the User of This Manual
The user of this manual is directed to read and carefully review the instructions, warnings and cautions contained herein prior to beginning installation or service activities.
While you may have previously installed or serviced equipment similar to that described in this manual, changes in design, manufacture or procedure may have occurred
which significantly affect the present installation or service.
Installation and Environment
Except for installations requiring certification by the manufacturer per federal standards, see that a radiation protection survey is made by a qualified expert in accordance
with NCRP 102, section 7, as revised or replaced in the future. Perform a survey after every change in equipment, workload, or operating conditions which might
significantly increase the probability of persons receiving more than the maximum permissible dose equivalent.
Diagnostic Imaging Systems - Mechanical-electrical Warning
All of the moveable assemblies and parts of this equipment should be operated with care and routinely inspected in accordance with the manufacturer’s recommendations
contained in the equipment manuals.
Only properly trained and qualified personnel should be permitted access to any internal parts. Live electrical terminals are deadly; be sure line disconnects are opened and
other appropriate precautions are taken before opening access doors, removing enclosure panels, or attaching accessories.
Do not under any circumstances, remove the flexible high tension cables from the x-ray tube housing or high tension generator and/or the access covers from the generator
until the main and auxiliary power supplies have been disconnected. Failure to comply with the above may result in serious or fatal bodily injuries to the operator or those
in the area.
Electrical-grounding Instructions
The equipment must be grounded to an earth ground by a separate conductor. The neutral side of the line is not to be considered the earth ground. On equipment
provided with a line cord, the equipment must be connected to properly grounded, three-pin receptacle. Do not use a three-to-two pin adapter.
Diagnostic Imaging Systems - Radiation Warning
X-ray and Gamma-rays are dangerous to both operator and others in the vicinity unless established safe exposure procedures are strictly observed.
The useful and scattered beams can produce serious or fatal bodily injuries to any persons in the surrounding area if used by an unskilled operator. Adequate precautions
must always be taken to avoid exposure to the useful beam, as well as to leakage radiation from within the source housing or to scattered radiation resulting from the
passage of radiation through matter.
Those authorized to operate, participate in or supervise the operation of the equipment must be thoroughly familiar and comply completely with the current established
safe exposure factors and procedures described in publications, such as: Subchapter J of Title 21 of the Code of Federal Regulations, “Diagnostic X-ray Systems and Their
Major Components”, and the national council on radiation protection (NCRP) no. 102, “Medical X-ray And Gamma-ray Protection For Energies Up To 10 Mevequipment Design and Use”, as revised or replaced in the future.
Those responsible for planning of x-ray and gamma-ray equipment installations must be thoroughly familiar and comply completely with NCRP no. 49, “Structural
Shielding Design and Evaluation For Medical Of X-rays and Gamma-rays of Energies Up to 10 Mev”, as revised and replaced in the future. Failure to observe these
warnings may cause serious or fatal bodily injuries to the operator or those in the area.
Add additional safety information as needed
Contents
DMS Troubleshooting Introduction ................................................................................................................... 1
Overview ..................................................................................................................................................................................... 1
Safety .......................................................................................................................................................................................... 1
Document Structure .................................................................................................................................................................... 2
Applicable Documents................................................................................................................................................................. 2
Troubleshooting Examples Using Service Tools .............................................................................................. 3
Artifact Diagnostics and Troubleshooting Block Diagram ........................................................................................................... 4
Analysis of the Artifact on Clinical Images .................................................................................................................................. 5
Analysis of the Artifact on the System Phantom Images............................................................................................................. 6
Artifact Diagnostics and Troubleshooting.................................................................................................................................... 7
UDMS Image Quality Troubleshooting........................................................................................................................................ 8
UDMS Image Quality Troubleshooting (for UDMS more than 6 months old) .............................................................................. 9
UDMS Image Quality Troubleshooting (for UDMS less than 6 months old).............................................................................. 10
TDMS Image Quality Troubleshooting ...................................................................................................................................... 11
Brilliance 64 Image Quality Troubleshooting Rules................................................................................................................... 12
TDMS................................................................................................................................................................................... 12
UDMS .................................................................................................................................................................................. 12
Rules for Module Swapping/Replacement........................................................................................................................... 13
Recognizing and Resolving Crosstalk Related Ring Artifacts ................................................................................................... 15
Overview .............................................................................................................................................................................. 15
Estimated Time............................................................................................................................................................... 15
Required Tools ............................................................................................................................................................... 15
Identifying Crosstalk Artifacts............................................................................................................................................... 16
Clinical Examples ........................................................................................................................................................... 19
Resolving Crosstalk Artifacts ............................................................................................................................................... 21
Scanner Information ....................................................................................................................................................... 21
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
Refer to Front Cover
i
Contents
Running the X-Steps Test (V.2.3.X Only)....................................................................................................................... 23
Installing the Cross-Talk Batch File on Systems with V2.3.X ......................................................................................... 27
Important Crosstalk Correction Rules .................................................................................................................................. 29
Air Calibration Instructions During Clinical Scanning ................................................................................................................ 30
Brilliance 64 with UDMS ...................................................................................................................................................... 30
Brilliance 64 with TDMS....................................................................................................................................................... 31
Bad Detector Utility Guidelines During Calibrations and Image Quality Troubleshooting.................................................... 31
Use of Fee Test for Brilliance 40/64..................................................................................................................................... 31
V2.2.5 Open Issues ............................................................................................................................................................. 32
Visual Diagnostics Temperature Kit Test (for BR64-channel with TDMS ONLY)........................................................... 32
TDMS Detector Module Reload Failure.......................................................................................................................... 32
Troubleshooting Procedures (Examples) .................................................................................................................................. 33
Troubleshooting a Faulty (Bad) ADM................................................................................................................................... 33
Rings Analysis in Brilliance 64 Slice .................................................................................................................................... 43
Steps for Troubleshooting Streak Artifacts .......................................................................................................................... 48
Steps for Troubleshooting Band Artifacts ............................................................................................................................ 48
Steps for Troubleshooting a CT Number Shift ..................................................................................................................... 49
Steps for Troubleshooting Center Dot and Button Artifacts ................................................................................................. 49
Appendix A: BR64 - UDMS Module Stability Data Collection for Image Quality Problems .............................. 50
Overview ................................................................................................................................................................................... 50
Prerequisites ............................................................................................................................................................................. 50
Data Collection and Processing Procedures .................................................................................................... 53
Data Collection and Processing Procedure for V2.3 ................................................................................................................. 54
Measuring Steps Using UHR Calibration............................................................................................................................. 54
Shadow Test Data Collection............................................................................................................................................... 57
Module Stability Data Collection .......................................................................................................................................... 59
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
Refer to Front Cover
ii
Contents
Processing Raw Data .......................................................................................................................................................... 65
Data Collection Procedure for V2.2.1/2.2.5/2.4.0/2.4.1............................................................................................................. 70
Enabling K2000 Visa............................................................................................................................................................ 70
Create Temporary Folders for Data Storage ....................................................................................................................... 71
Shadow Test Data Collection............................................................................................................................................... 71
Measuring Steps Using UHR Calibration............................................................................................................................. 72
Setting the A-plane to Maximum Opening ........................................................................................................................... 76
Temperature Setting....................................................................................................................................................... 79
Running FEE Test................................................................................................................................................................ 84
Processing Raw Data .......................................................................................................................................................... 88
Revert to the Gantry Normal Settings............................................................................................................................. 92
Module Auto Stability Test......................................................................................................................................................... 93
Installing the Auto Stability Test........................................................................................................................................... 93
Running the Auto Stability Test............................................................................................................................................ 94
Module Map Form ..................................................................................................................................................................... 95
Appendix B: Image Quality Issues .................................................................................................................. 96
Example 1 ................................................................................................................................................................................. 96
Solution ................................................................................................................................................................................ 96
Example 2 ................................................................................................................................................................................. 97
Solution ................................................................................................................................................................................ 97
Example 3 ................................................................................................................................................................................. 98
Solution ................................................................................................................................................................................ 98
Example 4 ................................................................................................................................................................................. 98
Solution ................................................................................................................................................................................ 98
Example 5 ................................................................................................................................................................................. 99
Solution ................................................................................................................................................................................ 99
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
Refer to Front Cover
iii
Contents
Example 6 ............................................................................................................................................................................... 100
Solution .............................................................................................................................................................................. 100
Example 7 ............................................................................................................................................................................... 100
Solution .............................................................................................................................................................................. 102
Example 8 ............................................................................................................................................................................... 103
Solution .............................................................................................................................................................................. 103
Example 9 ............................................................................................................................................................................... 104
Solution .............................................................................................................................................................................. 104
Example 10 ............................................................................................................................................................................. 105
Solution .............................................................................................................................................................................. 105
Example 11 ............................................................................................................................................................................. 106
Solution .............................................................................................................................................................................. 106
Example 12 ............................................................................................................................................................................. 107
Solution .............................................................................................................................................................................. 107
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
Refer to Front Cover
iv
Brilliance (Air) DMS Troublesooting Manual
Overview
DMS Troubleshooting Introduction
Overview
The purpose of this document is to help the FSE to troubleshoot the DMS Image Quality:
For the Detector Modules replacement procedures, Calibrations and performance testing refer to the appropriate
product manuals in the InCenter (See Applicable Documents section below).
IMPORTANT !
Due to image quality improvements implemented in Brilliance 64 V2.3, it is highly recommended to
upgrade to V2.3 from earlier versions.
Safety
WARNING
FOLLOW ALL SAFETY GUIDELINES AS DESCRIBED IN THE SAFETY GUIDELINES
MANUAL. FAILURE TO DO SO CAN RESULT IN SEVERE PERSONAL INJURY.
WARNING
FOLLOW ALL ESD SAFETY GUIDELINES AS DESCRIBED IN THE DMS REPAIR
AND REPLACEMENT MANUALS. FAILURE TO DO SO CAN RESULT IN DAMAGE
TO THE DMS AND ITS COMPONENTS.
CAUTION
To avoid DMS temperature instability, make sure that the Gantry is TURNED OFF NO
MORE THAN TWENTY MINUTES! If this happens, perform short tube conditioning.
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
Refer to Front Cover
1
Brilliance (Air) DMS Troublesooting Manual
NOTE
Document Structure
The Brilliance 64 and Brilliance 64 T Detector Modules in the DMS has required special maintenance
attention. See the BR 40/64 Repair and Replacement Manual for details.
Document Structure
The document contains the following sections:
• Applicable Documents on page 2
• Artifact Diagnostics and Troubleshooting Block Diagram on page 4
• Troubleshooting Procedures (Examples) on page 33
• Appendix A:BR64 - UDMS Module Stability Data Collection for Image Quality Problems on page 50
• Appendix B:Image Quality Issues on page 96
Applicable Documents
Refer to the following documents posted in the InCenter for the Service Tools description, repair and replacement,
calibration and performance testing procedures for the appropriate products:
• Brilliance Safety Guidelines
Brilliance 6/10/16/16P, BB, 40/64 Diagnostic Manuals
• Brilliance 6/10/16/16P, BB, 40/64 Calibration Manuals
• Brilliance 6/10/16/16P, BB, 40/64 Performance Manuals
•
•
CSIP Level 1
Brilliance 6/10/16/16P, BB, 40/64 DMS Repair and Replacement Manuals
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
Refer to Front Cover
2
Brilliance (Air) DMS Troublesooting Manual
Troubleshooting Examples Using Service Tools
The section describes typical troubleshooting procedures for some “usual” types of the ring/band artifacts and a few
examples of some “unusual” intermittent artifacts.
The following block diagrams describe the analysis of the artifact on the clinical images, identification of the the same
artifact on the System Phantom images and its troubleshooting.
Follow the block diagrams shown below to analyze and troubleshoot the artifacts.
CSIP Level 1
NOTE
Click the blue underlined text link to navigate to the respective section.
NOTE
The FEE test is not an approved FSE Service Tool. This means the FEE test does not follow the usability
guidelines used for FSE Service Tools and has extraneous information that may be misleading to the
FSE. The FSE using this test may end up with incorrect results.
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
Refer to Front Cover
3
Brilliance (Air) DMS Troublesooting Manual
Artifact Diagnostics and Troubleshooting
Artifact Diagnostics and Troubleshooting Block Diagram
Artifact Diagnostic and
Troubleshooting Start
Analysis of the Artifact on the Clinical Image
What kind of artifact (streak, ring, band, other) is it?
Which Modules are the cause?
What are the scan parameters?
Analysis of the Artifact on the System Phantom images
Does the artifact appears on the System Phantom image?
Does artifact appears in the same area as a on the clinical image?
Does artifact is stable and reproducible for Image Quality testing after troubleshooting?
Artifact Diagnoctic and Troubleshooting
Does artifact appear without Image Balance and Phantom calibration? (Phantom calibration or
hardware problem)
What kind of arifact?
What is the reason for the problem? Perform diagnostic and FRU replacement)
Perform relevant calibrations after FRU/s replacement
Is the Image Quality OK?.
UDMS Image Quality
Troubleshooting
TDMS Image Quality
Troubleshooting
Image Quality is OK
END
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
Refer to Front Cover
4
Brilliance (Air) DMS Troublesooting Manual
Analysis of the Artifact on Clinical Images
Analysis of the Artifact on Clinical Images
Return to Artifact Diagnostics and
Troubleshooting Block Diagram
Analysis of the Artifact on the
Clinical Image
Start
- Find the image with the artifact in the Archive
- Find the appropriate RAW data
(for BR64 UDMS ONLY)
Identify Crosstalk Artifact
YES
The cause is in Phantom
Calibration
Is it a Crosstalk
artifact?
YES
Resolve Crosstalk
Artifact
YES
Set parameters :
Phantom Calibration =Yes
Image Balance =Yes
Did artifact
disappear ?
NO
CSIP Level 1
The cause is in
hardware failure
NO
Image Quality is OK
END
Continue to the CIRS
Servers Diagnostic
NO
Use the Ring ID and /or Analysis to
define the defective Module /s
Perform OFF Line reconstruction
The cause is in
CIRS Servers
Did artifact
disappear ?
Set parameters :
Phantom Calibration =No
Image Balance =No
Copy down the following information :
• Scan parameters from the image with artifact
• Patient table Up /Down position
• DMS Motherboard temperatures
Perform OFF Line
reconstruction
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
Continue to Analysis of the
Artifact on the images of the
System Phantom
Refer to Front Cover
5
Brilliance (Air) DMS Troublesooting Manual
Analysis of the Artifact on the System
Analysis of the Artifact on the System Phantom Images
Return to Artifact Diagnostics and
Troubleshooting Block Diagram
Analysis of the Artifact on the images
Of the System Phantom Start
Perform few scans on the system phantom (to ensure that the artifact is stable)
with parameters as a clinical scan with artifact (protocol params, Patient table
up/Down position, DMS MB temperatures)
(prefer the axial scans as a more simple for analysis)
Did artifact
disappear?
I
YES
NO
If you do not see the artifact the problem
could be as follows:
Some not suitable scan parameters in the
clinical images (advice with Applications
Specialist)
Some software problems
Perform Air Calibration
Perform the scan on the system phantom
with parameters as a scan with artifact
Did artifact
disappear?
YES
Perform the same scans on the
system phantom after few hours
NO
Use the Ring ID and/or Analysis to verify that the
Artifact is in the same area as on clinical image
Did artifact
disappear?
YES
NO
Continue to Artifact Diagnostic
and Troubleshooting
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
Image Quality is OK
END
Refer to Front Cover
6
Brilliance (Air) DMS Troublesooting Manual
Artifact Diagnostics and Troubleshooting
Artifact Diagnostics and Troubleshooting
Return to Artifact Diagnostics and
Troubleshooting Block Diagram
Artifact Diagnostic and
Troubleshooting
Start
NO
Set parameters:
Phantom Calibration=No
Image Balance =No
NO
Is it Streak?
Did artifact
disappear?
YES
YES
Perform Phantom Calibrations
I
Perform the scan on the system phantom
with parameters as a scan with artifact
Possible reasons
High Voltage Arcing
Reconstruction problems
Dirty DMS and Scanner
Front Cover Mylars
Dirty Mattress, Phantom
Refer to “Steps for
Troubleshooting Streak
Artifacts” Section
Set parameters:
Phantom Calibration=Yes
Image Balance =Yes
Verify and correct the following prerequisites:
Scanner room temperature is inside the allowed tolerances
and stable.
Gantry fans functioning and filters are clean.
DMS and Scanner Front Cover Mylars are clean.
DMS cover fans function properly (by checking DMS
motherboards and Modules temperatures by Visual
Diagnostic)
Check that all DMS voltages are in tolerances (by Visual
Diagnostic). In case any voltage is out of tolerance ensure
that it is correct by manual measuring.
Ensure that all three Vicors are 100 watt, otherwise replace.
Perform DFS Calibrations
Refer to “Steps for Troubleshooting Band Artifacts” Section
CSIP Level 1
Perform Air Calibrations
Perform the scan on the system
phantom with parameters as a
scan with artifact
Perform the same scan after few
hours to check stability
Is Image Quality
OK?
NO
YES
YES
Continue to UDMS or
TDMS Troubleshooting
Diagram
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
Image Quality
is OK - END
Refer to Front Cover
7
Brilliance (Air) DMS Troublesooting Manual
UDMS Image Quality Troubleshooting
UDMS Image Quality Troubleshooting
Return to Artifact Diagnostics and Troubleshooting Block Diagram on page 4
UDMS Image Quality Troubleshooting Start
MORE Than
6 Months ago
When was the
DMS installed?
Troubleshoot the DMS
(swap/replace) Module according to
the Module Stability Test .
LESS Than
6 Months ago
Troubleshoot the DMS
(swap/replace ) Module
according to the rules .
Is there bad
detectors besides
X area?
YES
NO
1. Perform Phantom Calibrations
2. Perform Air Calibrations
Run Bad Detector Test to ensure that
there are no bad detectors in the
replaced Module
Are there bad
detectors in X
area?
NO
CSIP Level 1
YES
1. Perform a few scans with
“Clinical” parameters and a
few other scans to ensure
image quality .
2. Check IQ after a few hours .
Image Quality
OK?
NO
YES
Add a single bad detector
to the Bad Detector Table
if it is not already exists
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
Image Quality
is OK - END
Refer to Front Cover
8
Brilliance (Air) DMS Troublesooting Manual
UDMS Image Quality Troubleshooting
UDMS Image Quality Troubleshooting (for UDMS more than 6 months old)
Return to UDMS Image Quality Troubleshooting on page 8
Image Quality Troubleshooting for UDMS that is
MORE that 6 Months old
V2.2.1/2.2.5
V2.4.0/2.4.1
1. Perform the Module Stability
Data Collection .
2. Create the plots from the
RAW Data.
Which
version?
V 2.3
1. Perform the Module Stability
Data Collection .
2. Create the plots from the
RAW Data.
1. Install the Autostability test software on the FSE laptop .
2. Run the Autostability test .
3. Swap/replace the Modules according to the test results .
Continue to the Bad Detector Test in
the UDMS Troubleshooting Diagram
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
Refer to Front Cover
9
Brilliance (Air) DMS Troublesooting Manual
UDMS Image Quality Troubleshooting
UDMS Image Quality Troubleshooting (for UDMS less than 6 months old)
Return to UDMS Image Quality Troubleshooting on page 8
Image Quality Troubleshooting for UDMS that is
LESS than 6 Months old
Is it any of
14- 29
Modules?
NO
YES
( For full details
, see
“Image Quality Troubleshooting Rules”)
1 . Replace Module from M area with module from N/K
areas (ensure to use the Class A Modules without Bad
Detectors defined in Bad Detector Table).
2 . Insert new module instead of replaced in N/ K area .
Is it a single
detector in any of
2-8/35- 41
Modules?
YES
NO
Is it any of
1/ 9- 13/30-34/ 42
Modules?
NO
Add the defective
detector to the Bad
Detector Table
YES
Insert New Spare Part
Module
Continue to the Bad Detector Test in
the UDMS Troubleshooting Diagram
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
Refer to Front Cover
10
Brilliance (Air) DMS Troublesooting Manual
TDMS Image Quality Troubleshooting
TDMS Image Quality Troubleshooting
Return to Artifact Diagnostics and Troubleshooting Block Diagram
TDMS Image Quality
troubleshooting Start
Replace the defective
Module by the new spare
part Module
Run Bad Detector Test to ensure
that there is no bad detectors in
replaced Module
YES
Is there a bad
detectors?
1. Perform a few scans with “Clinical”
parameters and a few others to
ensure image quality .
2. Check IQ after a few hours .
is Image Quality
OK?
NO
NO
YES
1. Perform Phantom Calibrations
2. Perform Air Calibrations
CSIP Level 1
Image Quality
is OK - END
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
Refer to Front Cover
11
Brilliance (Air) DMS Troublesooting Manual
Brilliance 64 Image Quality
Brilliance 64 Image Quality Troubleshooting Rules
NOTE
Before starting the trouble-shooting procedure verify the DMS and type installed on the system. For
details see BR40_64_Orion-T DMS R&R Rev H available on the InCenter.
The DMS has two module classes: class A and class B. Figure 1 below illustrates the module class locations in the
DMS as supplied by Philips.
BR64T Class A or B
ABR64U Class B Only
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
ClassA
ClassA
Class A
1
BR64T Class A or B
BR64U Class B Only
A
Figure 1: Class A and B Module Location in DMS Assembly Supplied by Factory
TDMS
•
Six Pack spare part is not needed and therefore not available.
•
Only Class A module is available as a spare part and any defective or suspected module (Class A or B) may be
replaced with the new spare part module.
•
Swapping between modules within the DMS is not recommended.
UDMS
For UDMS installed for longer than six months, see the diagram UDMS Image Quality Troubleshooting on page 8.
For UDMS installed for less than six month, continue to Rules for Module Swapping/Replacement on the next page.
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
Refer to Front Cover
12
Brilliance (Air) DMS Troublesooting Manual
Brilliance 64 Image Quality
Rules for Module Swapping/Replacement
NOTE
The letters used to denote modules in the figures below are for illustrative purpose only.
— Only modules on either side of the DMS: areas X and N can be replaced by a new spare part module (see
Figure 2 below).
These Modules can be
replaced by a new spare
part Module
These Modules cannot be replaced by a
new spare part Module but may be
swapped with module in group N or X .
These Modules can be
replaced by a new spare
part Module
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
17
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
K X X X X X X X N N N N N MMMMMMMMMMMMMMMMN N N N N X X X X X X X K
Single detector per module that is not adjacent to another bad module can be
defined as a “Bad” and does not have to be replaced.
Figure 2: Spare Part Module Replacement Rules
— Some of the Bad ("dead") channels (single channel per module along X) can be defined in the Bad Detector
Table, either manually or automatically, and do not have to be replaced.
— Two adjacent modules may not be added to the Bad Detector table.
NOTE
CSIP Level 1
Do not replace the center modules (M) with a new spare part.
Six Pack spare part is not needed and therefore not available.
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
Refer to Front Cover
13
Brilliance (Air) DMS Troublesooting Manual
Brilliance 64 Image Quality
However, there are rules for swapping between areas. The modules in M area (see Figure 3 below) are only swapped
with functioning modules in areas N and X (modules 2-13 and 30-41).
- Replace defective modules in area “M” using modules from area “N”.or “K” (Class A only)
- The production date of the replacing module must match the defective module’s
. date
Defective or
suspected Module
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
17
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
K X X X X X X X N N N N NMM MMMMMMMMMMMMMM N N N N N X X X X X X X K
Functioning Module
Figure 3: Rules for Swapping Modules
— Central modules M can be replaced only by modules N or K with the same production date (see Figure 4
below).
0307
is the Production Date
Figure 4: Production Date on Module Label
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
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Brilliance (Air) DMS Troublesooting Manual
Recognizing and Resolving Crosstalk Related Ring Artifacts
Recognizing and Resolving Crosstalk Related Ring Artifacts
Overview
This section describes the method of recognizing Crosstalk artifacts on Brilliance 64 V2.3.X systems with UDMS and
the steps to resolve them.
Ring artifacts may appear due to different reasons. If the rings are indeed related to Crosstalk, the correction is via
fine-tuning of the Crosstalk parameters.
The steps in the Crosstalk correction are as follows:
• Identifying Crosstalk Artifacts on page 16
• Resolving Crosstalk Artifacts on page 21
• Important Crosstalk Correction Rules on page 29
Estimated Time
60 Minutes.
Required Tools
• SHIELD X-RAY FILTER (Tungsten Slit) P/N 453567033411.
CSIP Level 1
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15
Brilliance (Air) DMS Troublesooting Manual
Identifying Crosstalk Artifacts
Identifying Crosstalk Artifacts
The Crosstalk rings are seen as rings; partial or full (sometimes multiple or doubled rings) that appear at the edges of
modules 1 or 16.
START
Ring artifacts
detected
Is it a Crosstalk
Artifact?
No
Yes
Check that
Software Version is
2.3.X
Collect Scanner
Information and
send to Help Desk
for analysis
Help Desks
Yes
confirm that
problem is crosstalk related
Prerequisites for Running the
Step Test :
- Tungsten S lit (P/N
453567033411 )
(Order from Spare parts
Warehouse )
No
Yes
Run Step Test
and Send Info to
Help Desk
Continue With
Image Quality
Troubleshooting
Receive Batch File
from Helpdesk
Burn Batch File to
CD
Run Batch File on
CIRS
Perform Full Phantom Air and
HCOR Calibration
Attach the Batch File CD to Site SW Kit
END
Figure 1:
CSIP Level 1
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16
Brilliance (Air) DMS Troublesooting Manual
Identifying Crosstalk Artifacts
Crosstalk artifacts are mostly observed in Abdomen and Lungs scans.
Ring ID is the application in which Crosstalk rings can be identified as Crosstalk rings and not anatomical features or
other type of ring.
1 Log On as philips_service.
2 From the Desktop, double-click on
the Scanner Apllication icon.
3 In the Patient Directory, click
Application.
4 In the Patient Directory select the
series with the suspected artifacts
and click Ring ID from the Service
Applications group to open the
application (see Figure 2).
5 Scroll through the images to view
the image with the suspected rings.
Ring ID
icon
Figure 2:
6 Select Single Image Display to
view one image in the viewer (see
Figure 3).
Figure 3:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Identifying Crosstalk Artifacts
7 Click
to show the green
reference ring.
8 Bring the cursor up to the green
reference ring, click, and drag the
reference ring to overlap the ring
artifact (see Figure 4).
NOTE
Crosstalk ring artifacts only appear
at the module detectors 1 or 16.
9 Using the reference ring:
— Verify the artifact overlaps the
reference ring perfectly.
— Verify the bad detector is either 1
or 16.
10 If the bad detector is not 1 or 16 you
have not identified a Crosstalk
related ring artifact.
Bad Detector number
Figure 4:
CSIP Level 1
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18
Brilliance (Air) DMS Troublesooting Manual
Identifying Crosstalk Artifacts
Clinical Examples
Example 1 – Abdomen
Before Crosstalk correction
After Crosstalk correction
Figure 5:
CSIP Level 1
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19
Brilliance (Air) DMS Troublesooting Manual
Identifying Crosstalk Artifacts
Example 2 - Abdomen
After Crosstalk correction
Before Crosstalk correction
Figure 6:
CSIP Level 1
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20
Brilliance (Air) DMS Troublesooting Manual
Resolving Crosstalk Artifacts
Resolving Crosstalk Artifacts
This section includes the following topics:
• Safety Precautions on page 21
• Retrieving the DMS Serial Number on page 22
• Retrieving the Scanner Software Version on page 22
• Running the X-Steps Test (V.2.3.X Only) on page 23
• Installing the Cross-Talk Batch File on Systems with V2.3.X on page 27
Scanner Information
Safety Precautions
WARNING
PRIOR TO ANY SERVICE AND MAINTENANCE ACTIVITIES INSIDE
COMPONENTS:
•Switch OFF the system at the main power supply, (using the on-site ON-OFF switch)
and the internal/external Uninterruptible Power Supply (UPS).
•Make sure that no other person can switch ON power or switch OFF the security
measures, when installation, maintenance or service work on the system is
performed.
WARNING
CSIP Level 1
IN ADDITION TO THE WARNINGS LISTED ABOVE, MAKE SURE TO FOLLOW ALL
SAFETY GUIDELINES AS DESCRIBED IN THE SAFETY GUIDELINES MANUAL.
FAILURE TO DO SO CAN RESULT IN SEVERE PERSONAL INJURY.
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Brilliance (Air) DMS Troublesooting Manual
Resolving Crosstalk Artifacts
Retrieving the DMS Serial Number
Open the DMS cover.
1 Retrieve the DMS serial number as
follows:
a Open the Gantry front cover.
b Obtain and record the DMS serial
number from the DMS label attached
to the DMS cover (see Figure 7).
DMS Serial Number:
_______________________________
DMS Serial Number
Figure 7:
Retrieving the Scanner Software Version
1 On the top right corner of the
Brilliance Application Title bar click
Help (see Figure 8)
2 Information about the Scanner
software version is displayed (see
Figure 8).
Record this information in the space
below.
Scanner Software Version:
_______________________________
Figure 8:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Resolving Crosstalk Artifacts
Collecting Scanner Information for Sending to Helpdesk
1 If you suspect the ring artifacts are related to Crosstalk, and verified your suspicions by the Ring ID application, send
the following information, including clinical raws (in which the rings appear!) to your Helpdesk for the evaluation of a
new set of Crosstalk coefficients:
— Lung Raws
— Abdomen Raws
— Any other clinical Raws in which the Crosstalk rings are observed.
— The DMS serial number (see Retrieving the DMS Serial Number on page 22).
— Scanner software version (see Retrieving the Scanner Software Version on page 22).
2 Send the collected information to Helpdek for analysis.
Running the X-Steps Test (V.2.3.X Only)
The new Crosstalk coefficients are calculated based on the X-Steps test results. The replacement procedure is
performed using the Crosstalk Utility application.
NOTE
WARNING
Before continuing, make sure you have a Shield X-ray Filter (Tungsten Slit) ready, as it is required for
the following procedure.
MAKE SURE THAT THERE IS NO OBJECT IN THE SCAN FIELD.
1 If required, Log On as philips_service.
2 From the Host computer Desktop, double-click on the Scanner Application icon.
3 Align the Laser on the front edge of the Patient Table.
4 Zero the Patient Table.
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Resolving Crosstalk Artifacts
5 In the Home tab, click Diagnostic | Steps
Test (see Figure 9).
The X-STEPS Test window appears (see
Figure 10 on page 25).
Figure 9:
CSIP Level 1
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24
Brilliance (Air) DMS Troublesooting Manual
Resolving Crosstalk Artifacts
6 Click X-STEPS Test (see Figure 10).
A window appears with instructions on the
required steps to continue with the X-Steps
test (see Figure 11).
Figure 10: The Step Test window
7 Follow the on-screen instructions as listed
below.
Figure 11: Pre-test Instructions
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Resolving Crosstalk Artifacts
a Place the Shield X-ray Filter (Tungsten
Slit) on top of the Scanner’s Mylar, so
the whole of the Mylar opening is
covered in the Z-axis (see Figure 12).
NOTE There is no need to precisely
measure the Slit position; make
sure the the mylar opening is
covered by the Slit.
b Make sure no person is in the Scanner
room.
Figure 12: Shield X-ray Filter in position
8 Click OK in the instructions window (see
Figure 11 on page 25).
9 Wait until the test is complete and the
“Graphical data is READY” message
appears (see Figure 13).
10 Click Exit to close the Step Test window.
11 Open Windows Explorer and send a copy
of
C:\\usr\diamond.data\physics_log\steps
\plots\all_steps_x.plt to the Help Desk.
Figure 13: Test Status text Area
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Resolving Crosstalk Artifacts
Installing the Cross-Talk Batch File on Systems with V2.3.X
NOTE
Before starting this procedure, make sure you receive a batch file from Helpdek. This batch file includes
scripts that will install the new Crosstalk coefficients, based on the information you sent, and the
analysis results.
1 Burn the batch file received from Helpdesk onto a CD.
2 Insert the Crosstalk batch file into the CIRS-S1
Server CD drive.
3 Open CIRS folder on the Host PC Desktop or
Service Laptop.
Figure 14: Crosstalk Utility Batch File
4 Double-click the Remote Desktop icon for CIRS-S1.
5 Click OK at the security warning.
6 At the Log On prompt, log On as philips_service
and click OK.
7 On the CIRS-S1 Server Desktop, double-click My
Computer.
8 Navigate to the CD drive, and verify that the script
file Crosstalk_Update_XXX.vbs (see Figure 14)
includes the correct DMS serial number (see
Retrieving the DMS Serial Number on page 22) and
Brilliance Application software version (see
Retrieving the Scanner Software Version on page
22).
9 Double-click the Crosstalk_Update_XXX.vbs file.
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Resolving Crosstalk Artifacts
r
10 A CMD window opens (see
Figure 15).
Type Y and press Enter.
11 A message is displayed in the
window, showing the updated Left
and Right Crosstalk coefficient
values (see Figure NOTE).
Figure 15:
12 Press Enter to close the Script
window.
Figure 16:
NOTE
Only the Enter key closes the Script window
even though the onscreen instructions say “any
key”.
13 Perform full Phantom air and
HCOR calibrations.
NOTE
CSIP Level 1
Place the CD in the System Software Kit at the Site
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Brilliance (Air) DMS Troublesooting Manual
Important Crosstalk Correction Rules
Important Crosstalk Correction Rules
• Former Raw data cannot be reconstructed on the scanner.
• Raw data imported from another scanner that has different Crosstalk coefficients cannot be reconstructed on the
scanner.
• If for some reason the CIRS version is reinstalled or changed later but the DMS is not replaced, you will need to
reinstall the Crosstalk coefficients from the Cross-Talk batch file on the CD that you placed in the system software kit
and repeat the Air, Phantom, and HCOR calibrations.
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
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Brilliance (Air) DMS Troublesooting Manual
Air Calibration Instructions During
Air Calibration Instructions During Clinical Scanning
CAUTION
The scanning room conditions detailed in the Site Planning Data (PRD) must be maintained at
all times, including overnight, weekends, and holidays.
- The Gantry power must be ON at all times, including overnight, weekends, and holidays.
In case the user complains about rings or bands on images, ensure that the following rules are maintained during
clinical scanning:
Brilliance 64 with UDMS
•
Perform Air Calibration on a daily basis only for the mode suitable to the head protocol used on site
(e.g., 120kV, STD res, collim. 16×0.625, Rotation Time 0.75 sec).
•
Perform All Air Calibrations at least once or twice a week, preferably in the middle of the working day, when the
Scanner room temperature has stabilized within the 21-24°C range.
When to Perform Air Calibration
•
Immediately after a patient scan (recommended).
or
• In case the scanning room temperature changed 3°C or more from the last Air Calibration.
or
• In case the scanner was idle for approximately one hour or more (e.g., in the morning) perform
Short Tube Conditioning before performing Air Calibration. Do not exit Short Tube Conditioning even when the
massage "TC is completed" appears. Keep the scanner rotating for at least 10 more minutes and then perform the
Air Calibration.
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Air Calibration Instructions During
Brilliance 64 with TDMS
•
Perform All Air Calibrations once a week.
When to Perform Air Calibration
Preferably in the middle of the working day, when the Scanner room temperature has stabilized within the 21-24°C
range.
• In case the scanner was idle for approximately one hour or more (e.g., in the morning) perform
Short Tube Conditioning before performing Air Calibration. Do not exit Short Tube Conditioning even when the
massage "TC is completed" appears. Keep the scanner rotating for at least 10 more minutes and then perform the
Air Calibration.
•
Bad Detector Utility Guidelines During Calibrations and Image Quality Troubleshooting
NOTE
Replace the defective module only if the clinical or phantom images have problems in these areas. Use
the Bad Detector Utility to find the number of the faulty detector.
If the Bad Detector calibration, Air calibration, or any other physical calibration procedure found bad channels, identify/
locate the module which is out of limit (view the Results Plot if available) proceed as follows:
a Check the Image Quality (IQ) on phantom(s) and clinical images.
b If the IQ is OK, do not replace the module and do not define it as "bad" in the table.
c Single detector per module that is not adjacent to another bad module can be defined as a “Bad” and does not
have to be replaced. See Table 1 below for the module ranges that may be defined/not defined as Bad.
Table 1:
Detector Module Number
UDMS and TDMS
Modules that may be have detectors defined as Bad and do not have to be replaced 2 - 8 and 35 - 41
Modules that may NOT have detectors defined as Bad and must be replaced
1, 9 - 34, 42
Use of Fee Test for Brilliance 40/64
The FEE test is not an approved FSE Service Tool. This means the FEE test does not follow the usability guidelines
used for FSE Service Tools and has extraneous information that may be misleading to the FSE. The FSE using this
test may end up with incorrect results. Each of the tests or information available in the FEE test already exists in
currently available and validated FSE Service Tools.
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
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Brilliance (Air) DMS Troublesooting Manual
Air Calibration Instructions During
V2.2.5 Open Issues
Visual Diagnostics Temperature Kit Test (for BR64-channel with TDMS ONLY)
The Temperature Kit test in Visual Diagnostics is implemented in V2.2.5 for systems with TDMS and used for automatic
testing of DMS Cover Heating assemblies.
•
If the Temperature Kit passed the test, the Heating assemblies are working OK.
•
If the Temperature Kit test indicates that the test failed, this may be due to incorrect diagnostic testing and additional
troubleshooting may be required before replacing the Temperature Kit.
TDMS Detector Module Reload Failure
After restarting the system there are occationally instances when the detector modules do not restart correctly. This
may result in the following:
•
Band artifact on images.
•
Visual Diagnostics or Bad Detector Test indicates that all detector modules are dead.
When this occurs do the following:
1 Power down the Gantry: Press the Reboot Gantry button on the Gantry Left leg.
2 Wait 60 seconds.
3 Power up the Gantry: Release the Reboot Gantry button again.
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Troubleshooting Procedures (Examples)
Troubleshooting Procedures (Examples)
Troubleshooting a Faulty (Bad) ADM
1 Check the Bad Segments Table (see Figure 1 below).
a Log on in the Service mode and click Home | Diagnostic | Bad Detectors | Manual.
b Ensure there are no bad segments in the table.
c If faulty (bad) detectors appear in the Bad Detection Elements table, delete them before continuing to the next
step.
d Click Exit or close the Bad Segments and Bad Detection Elements dialog boxes.
Figure 1: Bad Detection Elements Table
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Troubleshooting Procedures (Examples)
2 Identify the Ring on the Patient Image (see Figure 2 below).
a In the Patient Directory select (highlight) the specific Patient study and series with the ring.
Figure 2: Identifying Ring on Patient Image
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Troubleshooting Procedures (Examples)
b Open the service application Ring ID (see
Figure 3).
Ring ID
Figure 3:
c Select Single Image Display to view one image in
the viewer (see Figure 4).
d Use the scroll bar to locate a RING on one or more
of the retrieved images. Click Ring.
CSIP Level 1
Single Image
Display
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
Figure 4: Single Image Display
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Brilliance (Air) DMS Troublesooting Manual
NOTE
Troubleshooting Procedures (Examples)
A green circle appears on screen with the details of the faulty (bad) ADM location.
e Click and hold the left mouse button on the green ring and adjust the green circle to overlap the ring on the image.
NOTE
Due to the symmetrical structure of the DMS, the results indicate that two ADM Modules are
suspected as faulty
3 Record the Data regarding the faulty
(bad) ADM location (see Figure 5).
Suspect detector modules
Figure 5: Single Image Display
a Select View | Image Parameters.
b Write down the Scan Parameters.
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
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Brilliance (Air) DMS Troublesooting Manual
Troubleshooting Procedures (Examples)
c Click OK (see Figure 6 below).
Figure 6: Image Parameters
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Troubleshooting Procedures (Examples)
4 Scan the System Phantom (see Figure 7 below).
a Assemble the System Phantom centered on the Patient Table.
Figure 7: System Phantom Assembly
b Perform a new scan using the parameters recorded in Step 3 on page 36.
NOTE
Perform the scan on the similar section of the Phantom in reference to the Patient scan (Body/Head).
Body Protocol
Head Protocol
Figure 8: Example of Image -Patient Scan Body/Head
CSIP Level 1
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38
Brilliance (Air) DMS Troublesooting Manual
NOTE
Troubleshooting Procedures (Examples)
If the faulty (bad) ADM is located on the far side of the modules assembly (far from the center), the
RING might occur only in a body scan.
To verify, perform an additional Body scan with FOV = 500mm, and Patient Table is MAX DOWN.
5 Verify the Ring on System Phantom:
6 Confirm a suspicious ADM using Bad Detector Test in Selective Calibration:
a Select Home | Calibration | Automatic/Selective Calibrations (see Figure 9 below).
b Ensure there are no objects in the scan area (Phantom, Patient Table).
c Select Bad Detector Test (see Figure 10 below).
d Click Start. The automatic scans begin.
e When the scans have completed and bad detectors were detected a message appears. Click Continue.
Figure 9:
Figure 10:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Troubleshooting Procedures (Examples)
f A Results Table appears with a list of failed channels and information about the faulty (bad) ADM number (see
Figure 11 below).
g Click Plot With X-ray to display the Bad Detector Test Results window with a graphic description of the allowed
range.
.
Figure 11: Results Table
(example only, actual data may differ)
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Troubleshooting Procedures (Examples)
h Zoom into a suspected area by selecting menu Scale | Zoom
i Mark the required area. To restore full image, select Scale | Restore.
j Select menu View | Long Point Format and mark the required point by clicking the mouse right-button to specify
the bad channel data.
Module #
Figure 12: Graphic Image of Results
(example only, actual data may differ)
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
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41
Brilliance (Air) DMS Troublesooting Manual
NOTE
Troubleshooting Procedures (Examples)
When a failed channel is detected but close to the limit (as shown in Figure 13 below), do not
automatically replace the ADM. The problem can be solved by performing Air Calibration. In case of
uncertainty, contact the Customer Support Center.
Figure 13: Failed Channel Detected Close to Limit
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
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Brilliance (Air) DMS Troublesooting Manual
Troubleshooting Procedures (Examples)
Rings Analysis in Brilliance 64 Slice
If you have any image rings perform the following procedure:
1 Start Bad Detector test (see Troubleshooting a Faulty (Bad) ADM on page 33).
2 Perform a scan 64x 0.625
3 If there are bad detectors, plot the detector result without X-ray.
Bad
Detectors
Figure 14:
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
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Brilliance (Air) DMS Troublesooting Manual
Troubleshooting Procedures (Examples)
— The plot results in Figure 15 below means the Vicor Power Supplies are OK.
Figure 15:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Troubleshooting Procedures (Examples)
— The plot results in Figure 16 below means the Vicor Power Supplies are defective
Figure 16:
— The plot results in Figure 17 below means the Vicor Power Supply 1 is defective
Figure 17:
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
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Brilliance (Air) DMS Troublesooting Manual
Troubleshooting Procedures (Examples)
4 Plot the detector results with X-ray.
Slice Edges
Figure 18: Bad Detector Table
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
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Brilliance (Air) DMS Troublesooting Manual
Troubleshooting Procedures (Examples)
Figure 19: Bad Detector Plot
5 Check if you there is a faulty detector in first or last slice (the edge slices)
— If you get in only one edge faulty detector – Run A-Plane Z-alignment Calibration and repeat the Step 1 on page
43 through Step 4 on page 46 once more and if the same problem persists replace the A-plane collimator.
— If you have faulty detectors in both edges – replace the A-plane collimator.
— If you get a permanent ring in the center slices, the problem is a defective module.
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
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Brilliance (Air) DMS Troublesooting Manual
Troubleshooting Procedures (Examples)
Steps for Troubleshooting Streak Artifacts
NOTE
Be sure that phantom is properly aligned and clean; no contrast or other material is on phantom, laser
lights are aligned, the table Vertical is aligned, there is no contrast on the Gantry Mylar, on DMS Mylar,
or on the APDMS, before performing phantom calibrations.
•
Verify which protocols the problem occurs in. Verify that X and Y offsets are set to zero. (Verify that it is not
something that was added by Air Calibration).
•
Perform visual inspection of the Fans, Filters, APDMs and Mylar (contrast), A-plane assembly, or something else in
the field.
•
Check for Arc’s (Hard arcs or soft arcs). If Arcs are present run Long Tube Conditioning. If arcing problems persist
you need to troubleshoot the HV issue. (Check HV cables for tightness and proper greasing, as well as signs of
arcing).
•
Run Physics Analysis (on both phantom and air). Examine the Reference Detector Data. If the streak was caused by
a Short Duration Arc, you will be able to see it in this data as a spike.
•
Run Fee Test (all tests).
•
Verify APDM cable connections and ensure that the modules are properly torqued. Over tightening may damage
modules and loose modules may result in intermittent artifacts.
•
If the artifact persists, after performing the steps above and the associated repairs, refer to Appendix A:BR64 UDMS Module Stability Data Collection for Image Quality Problems on page 50.
Steps for Troubleshooting Band Artifacts
Usually banding occurs because a whole APDM has an issue similar to a Gain difference.
CSIP Level 1
•
Check which protocols cause the artifact. Use these protocols to troubleshoot the artifact.
•
Run Physics Analysis (on both phantom and air).
•
Run scans without phantom calibration. If problem goes away, perform new phantom calibration.
•
Run all system image related calibrations.
•
If the artifact persists after performing the steps above and the associated repairs, refer to Appendix A:BR64 - UDMS
Module Stability Data Collection for Image Quality Problems on page 50.
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
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Brilliance (Air) DMS Troublesooting Manual
Troubleshooting Procedures (Examples)
Steps for Troubleshooting a CT Number Shift
•
Verify that protocol that HCOR checks are not being performed with todays date as the birthdate for the QA scan.
This will cause the system to default to a pediatric setting, which will shift the CT numbers. If this is the case there is
no problem, repeat the QA scan with a birthdate set to allow for adult protocol usage.
•
Run the Reference Detector checks listed in the Calibration manual. Use Physics analysis to plot the reference
detector and look for anomalies. Low Reference Detector values may cause Shot Comm Collapse errors.
•
Run system calibrations.
Steps for Troubleshooting Center Dot and Button Artifacts
CSIP Level 1
•
Treat the issues first as a ring and follow the steps for rings above.
•
If the artifact persists after performing the steps above and the associated repairs, refer to Appendix A:BR64 - UDMS
Module Stability Data Collection for Image Quality Problems on page 50.
•
IF YOU ARE TRAINED to use the Data Analysis tool, perform the procedures described in Data Collection and
Processing Procedures on page 53, and replace the DMS modules according to the analysis results.
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
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Brilliance (Air) DMS Troublesooting Manual
Overview
Appendix A: BR64 - UDMS Module Stability Data Collection for Image
Quality Problems
Overview
The procedures in this section should be performed during image quality troubleshooting on UDMSs installed for over
six months.
Prerequisites
Complete the following procedure prior to pefroming the Data Collection procedure.:
1 Verify proper A-Plane Filter Operation & Alignment.
(See FILTER TRAY POSITION ADJUSTMENT – BRILLIANCE CT
SCANNERS section in Brilliance 2.2.1/2.2.2/2.2.7 Calibration 6/10/16/16P
rev_I and above manual on Incenter.
2 Remove the DMS cover to see if modules are all A type or
B type. Complete the DMS Module Map and save with collected data. See
Module Map Form on page 95 .
3 Make sure that all the Gantry and DMS fans are properly functioning.
4 Make sure that ALL the Mylar covers (DMS and Patient Entry Cone) are free
from contrast materials, dust and other dirt.
5 Ensure UHR comb is clean and free of contrast.
6 Check that the Gantry's filters are clean and free of contrast agents.
7 Inspect the wedge inside the A-Plane collimator (see Step a to Step h below)
and verify that there are no cracks.
Figure 20:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Prerequisites
a From the desktop, click on Service tools |
Diagnostic Tools | DMS tools| DMS
utilities| DMC utility.
The DMC Utility window appears (see
Figure 59).
(
g
)
b Click the Go2Position tab.
c Open the Aplane to 16000 with the DMC
utility:
— Enter 16000 in the Aplane Units box.
— Click on the Move button.
Figure 21:
d Open A-plane reader by clicking Service
tool | DMS Tools | A Plan Reader. Turn
the reader on by clicking the OFF button
(see Figure 60).
Figure 22:
e Make sure that the opening is 16000 by looking at the red value on the right side of the SW part of the reader (see
Figure 61 below).
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Prerequisites
Figure 23:
f Turn off the A Plan reader by clicking the ON button and close the A-plane reader.
g Click OK in the Do Not Save message if it comes up.
h Close the DMC Utility application. (Very important step).
8 This test should be performed when the room temperature is between 20 – 24°C (70 - 75°F). (The maximum
allowed change in temperature is +/-1.5°C (3°F) from the constant ).
9 Close All Covers and wait 1 hour before proceeding to data collection.
10 Continue to the Data Collection and Processing Procedures on page 53.
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Prerequisites
Data Collection and Processing Procedures
The data collection procedures in this section are applicable for the following software versions:
CSIP Level 1
•
Data Collection and Processing Procedure for V2.3 on page 54.
•
Data Collection Procedure for V2.2.1/2.2.5/2.4.0/2.4.1 on page 70.
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
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Brilliance (Air) DMS Troublesooting Manual
Data Collection and Processing
Data Collection and Processing Procedure for V2.3
NOTE
NOTE
The following procedure is for V2.3 only.
For V2.2.1/2.2.5/2.4.0/2.4.1, see Data Collection Procedure for V2.2.1/2.2.5/2.4.0/2.4.1 on page 70.
The data that needs to be sent:
- Clinical images and raw data, showing the artifacts (spot / band / ring).
- Images and raw data (via UTS Browser) of the problematic protocols scanned on the system phantom
(head protocols on the head part, body protocols on the body). Head scans should be performed on
the Water (central) part of the Head Phantom.
- Shadow test, plot results and files as described in the following steps.
Measuring Steps Using UHR Calibration
Measure the steps using UHR Calibration as follows:
1 Perform Ultrahigh Res Comb Align (from automatic selective calibration). Follow the instructions on the screen and
the calibration manual that is on the InCenter.
2 Go to Archive, and select IRS.
3 Select the CommonCalib Calibration that matches the UHR calibration. This study will contain 4 series – two with 1
image and two with 20. Select the first series that has 20 images (see Figure 54 below).
Figure 24:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection and Processing
4 Go to Application | Service Applications | Physics Analysis (see Figure 55 below).
Figure 25:
5 Click Archive.
6 After a short wait, press Prep \
Std.Filter (see Figure 56). The Prep.
Reconstruction Parameters window
appears.
Figure 26:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection and Processing
7 Click OK in the Prep. Reconstruction
Parameters window. The Raw/Bias
Display window appears (see
Figure 57).
Figure 27:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection and Processing
8 Click Plot in the Raw/Bias Display
window. A graphView window appears
(see Figure 58).
9 Press the Windows+E keys.
10 Navigate to D: and create a folder
called Shadow
11 Save the graph as steps.plt in the
D:\SHADOW folder as a .plt file by
selecting from: File | save… | steps.plt
from the meun bar.
Figure 28:
Shadow Test Data Collection
NOTE
1. Do not perform a module replacement based on the Shadow Test results.
2. Make sure the bed or phantom are not in the field of view.
1 Double-click on the Scanner Application icon located on the Desktop
2 Click Home | Diagnostics | Shadow test
3 Follow the instructions that appear on the monitor.
4 Click Start.
5 After the test is completed click Advanced and select 16-slc plot or All Channels plot (see Figure 29). The
Shadow plot appears.
6 Save the plot as shadow.plt in the D:\Shadow folder.
CSIP Level 1
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Data Collection and Processing
7 Provide information on what is Gantry room
temperature and whether the temperature is
stable. (Change within 1-2 hour).
8 Provide information on how frequent the
customer performs air calibrations, and what
is the procedure (morning/afternoon/end of
day), and whether the system has been
rotating for ~30 minutes before calibrations (in
case that system was idle for 1/2 hour or
longer).
9 Scan the system phantom and save the raw
data and the DICOM images showing the
artifact.
CSIP Level 1
© 2008 Koninklijke Philips Electronics N.V All Rights Reserved
Figure 29:
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Brilliance (Air) DMS Troublesooting Manual
Data Collection and Processing
Module Stability Data Collection
NOTE
This procedure takes approximately 2 hours to complete.
1 Double-click My Computer on the
desktop.
2 Navigate to C:\misc and doubleclick on SignalStability.hta.
The Type Switch dialog box appears
(see Figure 30).
3 Verify that all checkboxes are
UNCHECKED.
4 Click OK.
CAUTION Do not skip
Step 4 above.
5 Click Cancel to close the Type
Switch dialog box.
Figure 30:
6 Navigate to
C:\misc\StabilityTestOrionU.csh.
7 A warning message appears. Click
OK on the Warning message (see
Figure 31)
Figure 31:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection and Processing
8 The Modules Signal Stability Test
window appears (see Figure 32).
9 Select the Modules Signal
Stability Test and click Start.
Figure 32:
10The DMS Name dialog box
appears (see Figure 33). Type the
DMS serial number of your system
in the text box and click OK to start
the test.
Figure 33:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection and Processing
11 Click OK on the Notice Message
(see Figure 34)
Figure 34:
12Make sure that the required steps
in the next message are followed
and click OK (see Figure 35)
Figure 35:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection and Processing
13The following Fan Speed High
(DMS low temp) Skip message
appears. DO NOT CLICK SKIP
(see Figure 36).
Figure 36:
14The DMS Fans speed will be changed to a maximum (DMS low temp), the DMS will be set to 180 Degrees. and you
must wait for 1800 sec (0.5 hour) (see Figure 37).
Figure 37:
15At the end of the 0.5 hour wait, there will be up to 0.5 hour wait for the DMS low temperature to stabilize. This may
take another 0.5 hour. The DMS LMB and RMB temperature will be listed (see Figure 38).
Figure 38:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection and Processing
16At the end of the stability period a low temperature scan will be preformed (see Figure 39).
Figure 39:
17A message appears about
changing the fan speed to low
(DMS high temperature). DO NOT
CLICK THE SKIP BUTTON (see
Figure 40).
Figure 40:
18The DMS Fans speed will be changed to a minimum (DMS high temp), the DMS will be set to 180 degrees. and
there will be a wait for 1800 sec. (0.5 hour).
19At the end of the 0.5 hour wait, there will be up to a 0.5 hour wait for the DMS high temperature to stabilize. This
may take another 0.5 hour. The DMS LMB and RMB temperature will be listed (see Figure 41).
Figure 41:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection and Processing
20At the end of the stability period a
high temperature scan will be
preformed.
21A Stability Test Successfully
Completed message appears.
Follow the instructions on the
screen (see Figure 42) and click
OK.
Figure 42:
22The Temperature Control Restore
message appears: “Please turn
OFF the Gantry, wait one minute,
and turn it bacl ON”. Click OK
(see Figure 43).
Figure 43:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection and Processing
Processing Raw Data
Processed Raw data is converted to .plt file format. The converted files are automatically saved to the following path:
C:\usr\Diamond.data\Physics_log\StabilityTest\DMSName (where DMSName is the name entered in the DMS
Name dialog box).
Set the CTspec as follows:
1 On the Desktop double-click the My Computer icon and navigate
to C:\Misc.
2 Double-click on the SignalStability.hta file.
3 Select (show checkmark) CTspec (see Figure 42).
4 Click OK.
CAUTION Do not skip Step 4 above.
5 Click Cancel to close the Type Switch dialog box.
Figure 44:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection and Processing
6 Press Windows+D to show
the desktop.
7 Double-click My Computer
on the desktop.
8 Navigate to C:\Misc\.
9 Double-click
StabilityTestOrionU.csh.
10 The message shown in
Figure 45 appears, click
OK.
Figure 45:
NOTE If the message in Figure 46
appears, renew the Visa key
and restart the procedure.
11 The Module Stability Test
dialog box appears (see
Figure 45).
Figure 46:
12 Click Start. The DMS
Name dialog box appears.
Click Cancel (see
Figure 47).
Figure 47:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection and Processing
13 .Click Start. The DMS
Name dialog box appears.
Click Cancel (see
Figure 47).
Figure 48:
14 The Results menu bar appaers. Click Load (see Figure 49).
Figure 49:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection and Processing
15 Double-click on each of the folders as they appear in the Directories column / Physics log/. | Stability Test/. |
DMSName/.
– Pay attention to double-click on the name that ends with one dot and not two dots (this will take you to an upper
level directory in the folder tree).
16 Click OK.
NOTE
These files are
created after
performing the
Module Stability Test
without changing any
switch.
Figure 50:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection and Processing
17 The DMS Name dialog box appears. Type the DMS name_P. Click OK (see Figure 51).
NOTE
Where DMS name is the DMS serial number of your system and “_P” indictes Processed Data.
Figure 51:
18 The Calc button in the Modules Stability Test window becomes active again. Click Calc. The calculation results are
saved to C:\usr\diamond.data\Physics log\Stability Test\DMSName.
19 Continue with Module Auto Stability Test on page 93.
WARNING
THE BELOW Step 20 AND Step 21 ARE MANDATORY BEFORE RETURNING THE
SCANNER TO THE CUSTOMER.
20Press the Gantry Reset blue button to switch the Gantry OFF, wait for 60 seconds, and then press and release the
Gantry Reset blue button to switch ON the Gantry.
21 Wait 20 minutes after the system power up before running the Daily Phantom Checks.
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection Procedure for V2.2.1/
Data Collection Procedure for V2.2.1/2.2.5/2.4.0/2.4.1
NOTE
For V2.3, see Data Collection and Processing Procedure for V2.3 on page 54.
NOTE
Before starting this test, make sure that all the Gantry and DMS fans are properly functioning. Make
sure that the Mylar covers are free from contrast materials, dust and other dirt. Check whether the
Gantry's filters are clean. In addition, this procedure must be performed with all DMS and Gantry
covers closed.
NOTE
1. This test should be performed when the room temperature is between 18º – 24 º Celsius.
2. All Scans should be performed in air.
Enabling K2000 Visa
Visa must be enabled to run tests.
1 Log In as Philips_service.
2 Verify Visa key is valid as follows:
a Double-click the VisaEntry icon located on the Desktop.
b View the Status: Visa Valid (see Figure 52).
c Click Done.
Figure 52:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection Procedure for V2.2.1/
Create Temporary Folders for Data Storage
1 Create the following temporary folders in D: FEE1, FEE2, SHADOW:
2 Right click on Start and select Explore.
3 In the left tree click on drive D:
4 From the menu on top select File | New | Folder and type FEE1.
5 Repeat the last step for the FEE2 and the SHADOW folders.
6 Close the Explorer window.
Shadow Test Data Collection
NOTE
1. Do not perform a module replacement based on the Shadow Test results.
2. Make sure the bed or phantom are not in the field of view.
1 Double-click on the Scanner
Application icon located on the
Desktop.
2 Click Home | Diagnostics |
Shadow test.
3 Follow the instructions that appear
on the monitor.
4 After the test is completed click
Advanced and select 16-slc plot
and All Channels (see Figure 53).
The Shadow plot appears.
Figure 53:
5 Save the plot as shadow.plt
6 Click GRAPH (see Figure 53). The Rating plot appears.
7 Save the plot as rating.plt in the D:\SHADOW folder.
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
NOTE
Data Collection Procedure for V2.2.1/
if you are not sure how to change the drive letter or the directory, save the plot in the above Step 6 and
the following Step 8 to the default location (usr/diamond.root/bin) and then copy the files to
D:\SHADOW.
8 Provide information on what is Gantry room temperature and whether the temperature is stable. (Change within 1-2
hour).
9 Provide information on how frequent the customer performs air calibrations.and what is the procedure (morning/
afternoon/end of day), and whether the system have been rotating for ~30 minutes before calibration (in case that
system was idle for 1/2 hour or longer).
10 Scan the system phantom and save the raw data and the DICOM images showing the artifact.
Measuring Steps Using UHR Calibration
Measure the steps using UHR Calibration as follows:
1 Perform Ultrahigh Res Comb Align (from automatic selective calibration).
2 Go to Archive, and select IRS.
3 Select the CommonCalib Calibration that matches the UHR calibration. This study will contain 4 series – two with 1
image and two with 20. Select the first series that has 20 images (see Figure 54 below).
Figure 54:
4 Go to Application | Service Applications | Physics Analysis (see Figure 55).
Figure 55:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection Procedure for V2.2.1/
5 Click Archive.
6 After a short wait, press Prep \
Std.Filter (see Figure 56). The Prep.
Reconstruction Parameters window
appears.
Figure 56:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection Procedure for V2.2.1/
7 Click OK in the Prep. Reconstruction
Parameters window. The Raw/Bias
Display window appears (see
Figure 57).
Figure 57:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection Procedure for V2.2.1/
8 Click Plot in the Raw/Bias Display
window. A graphView window appears
(see Figure 58).
9 Save the graph in the D:\SHADOW
folder as a .plt file by selecting from:
File | save… | steps.plt from the menu
bar.
Figure 58:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection Procedure for V2.2.1/
Setting the A-plane to Maximum Opening
1 From the desktop, click on Service tools |
Diagnostic Tools | DMS tools| DMS utilities|
DMC utility.
The DMC Utility window appears (see
Figure 59).
(
g
)
2 Click the Go2Position tab.
3 Open the Aplane to 16000 with the DMC
utility:
a Enter 16000 in the Aplane Units box.
b Click on the Move button.
Figure 59:
4 Open A-plane reader by clicking Service tool
| DMS Tools | A Plan Reader. Turn the
reader on by clicking the OFF button (see
Figure 60).
Figure 60:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection Procedure for V2.2.1/
5 Make sure that the opening is 16000 by looking at the red value on the right side of the SW part of the reader (see
Figure 61 below).
Figure 61:
6 Turn off the A Plan reader by clicking the ON button and close the A-plane reader.
7
Click OK in the Do Not Save message if it comes up.
8 Close the DMC Utility application. (Very important step).
9 Send gantry_devel_req (92) as follows:
a From the Service Tools click General Tools | Can Send.
b Under Category put a checkmark in GANTRY and navigate to gantry_devel_req.
c Highlight gantry_devel_req.
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection Procedure for V2.2.1/
d On the right-hand pane area, under the Value column, click the box (it is showing 0) and type 92 (see Figure 62
below).
This action will keep the A-plane in a constant opening of 16000.
e Click on the Send to Can button.
Figure 62:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection Procedure for V2.2.1/
Temperature Setting
Set the temperature as follows:
1 Navigate to C:\Program Files\RCOM_Utility\ and run
RCOM Utility.exe. The RCOM Utility window appears
(see Figure 63).
2 Select Nominal.
3 Click OK.
Figure 63:
4 Select the Temperatures tab.
5 In the Temperature control area, click the Get button
(see Figure 64).
The panel interface is refreshed and the Control
Temperature On box will be checked.
6 Uncheck the Control Temperature On box and click the
Set button.
Figure 64:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection Procedure for V2.2.1/
7 Set the DMS fans to max rotation speed as follows:
a In the RCOM Utility, click the Read/Write tab (see Figure 65).
b Enter Address of 100E and 100F.
c Enter Data of 220F for both the above addresses.
d Click the Write button for each Data. (Follow the sequences 1-6 in Figure 65). Do no use the Write All Selected
option.
8 Close the RCOM Utility.
Figure 65:
9 Set rotor position to 1800 (DMS in 12 O’clock position) by Can send as follows:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection Procedure for V2.2.1/
a From the Desktop double-click the Scanner Application icon.
b From Home | Calibration double-click Calibration CAN Interface.
c Wait while the CAN utility window appears on the top right of the monitor screen (see Figure 66).
d From the select command drop down window select
rotor_postion_180 and click Send Command (see Figure 66).
e A message about Rotating the Gantry appears at the top right
screen. Wait until the message disappears and click Close on
the CAN Utility window.
Figure 66:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection Procedure for V2.2.1/
10 Wait one hour for the DMS to reach a
steady state temperature.
11 From the desktop double-click the Service Tools and
click Diagnostic Tools | DMS Tools | DMS Utilities
|DMS Temperature Monitor (see Figure 67).
Figure 67:
CSIP Level 1
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Data Collection Procedure for V2.2.1/
12 Turn on the Green (start) switch and record the Left
Motherboard and the Right Motherboard temperatures
(see Figure 68).
Figure 68:
13 Stop the reading by turning off the Red (stop) switch
(see Figure 69) and close the Service Tools.
14 Disable the rotation as follows:
a On the right-hand monitor click Preferences |
Scanner and uncheck Gantry rotation.
b Set the diag. level to 1, and click OK.
Figure 69:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection Procedure for V2.2.1/
Running FEE Test
Run the FEE Test as follows:
1 Make sure that the couch is zeroed on the edge of the Carbon top.
2 Run FEE detector test. Proceed as follows:
a Select Dead channels test (see Figure 70 below).
b Click Start Scans >>Start automatic scans
c Make sure that protocol is thedefault protocol (0.75sec, 120kv, 100mAs, 64x0.625) (see Figure 71 below).
Figure 70:
d Click GO.
e When prompted hold the Enable button on the CT Box.
f When prompted, press Manual scan on the CT box to start the
scan.
3 Close the Dead Channel Html Test window.
CAUTION
Do not exit the FEE test
application.
Figure 71:
CSIP Level 1
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Data Collection Procedure for V2.2.1/
4 Set Rotor position to 1800 again (DMS in 12 O’clock) by Can send, as follows:
a From the Desktop double-click the Scanner Application icon.
b From Home | Calibration double-click Calibration CAN Interface.
c Wait while the CAN utility window appears on the top right of the monitor screen (see Figure 72).
d From the select command drop down window select rotor_postion_180
and click Send Command (see Figure 72).
e A message about Rotating the Gantry appears at the top right screen.
Wait until the message disappears and click Close on the CAN Utility
window.
Figure 72:
5 Save the Raw data for the scan performed (by the FEE test) to folder D:\FEE1:
a In the archive manager select IRS, sort by date and record the study ID of the last raw data of the last scan
preformed.
b Navigate to c:\misc\GetRawUtility\GetRaw1.1 and double-click on the CRU215_HFA.bat file.
c Follow the on-screen instructions (for information on how to use CRU, see the BR64 CIRS Service manual on
InCenter).
d From the select command drop-down menu select rotor_postion_180 and click Send Command (see Figure 66
on page 81).
e A message Rotating the Gantry appears at the top right screen.
f Wait until the message disappears and click Close on the CAN Utility window.
g Copy the Raw data from D:\temp to the D:\FEE1 folder.
CAUTION
Do not exit the FEE test application.
6 Set the DMS fans to min. rotation speed as follows:
a Navigate to C:\Program Files\RCOM_Utility\ and run RCOM Utility,exe
CSIP Level 1
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Data Collection Procedure for V2.2.1/
b Select Nominal.
c Click the Read/Write tab.
d Enter Address of 100E and 100F.
e Enter Data of 2208 for both the above addresses.
f Click the Write button for each Data (follow sequence 1 - 6 in Figure 73 below).
Figure 73:
CSIP Level 1
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Brilliance (Air) DMS Troublesooting Manual
Data Collection Procedure for V2.2.1/
7 Wait at least one hour for the DMS temperature to stabilize.
8 From the Desktop double-click the Service Tools and click Diagnostic Tools | DMS Tools | DMS Utilities | DMS
Temperature Monitor (see Figure 67 on page 82).
9 Turn on the Green (start) switch and record the Left Motherboard and the Right Motherboard temperatures (see
Figure 68 on page 83).
WARNING
THERE SHOULD BE A DIFFERENCE OF 2-3°C DEGREES BETWEEN THE
TEMPERATURE RECORDED ON THE ABOVE Step 8 AND Step 9. THIS APPLIES TO
BOTH THE LEFT AND RIGHT MOTHERBOARDS. IF YOU CANNOT ACHIEVE THE
DESIRED TEMPERATURE CHANGE, THERE IS SOMETHING WRONG IN THE
COOLING / TEMPERATURE SENSING CIRCUITS OF THE DMS: FANS, DMP, RCOM,
MOTHERBOARD, ETC. THIS WOULD REQUIRE THAT THE FAULTY
COMPONENT BE REPLACED AND DATA COLLECTION SHOULD BE RETAKEN BY
STARTING FROM THE TOP ON page 70.
10 Stop the reading by turning off the Red (stop) switch and close the Service Tools (see Figure 69 on page 83).
11 Run the FEE detectors test (see Step 2 and Step 3 on page 84).
12 Save the Raw data for the scan performed to D:\FEE2:
a In the archive manager select IRS, sort by Date and record the study ID of the last Raw data of the last scan
performed.
b Navigate to c:\misc\GetRawUtility\GetRaw1.1 and run the CRU215_HFA.bat file or use CRU 216 that was
downloaded from the CLE CSG web site.
c Follow the on-screen instructions but do not compress (zip) the data when asked. For information on how to use
CRU refer to the c:\misc\GetRawUtility/CRUxx instructions.pdf or the BR64 CIRS Service manual on Incenter.
d If the message about Deleting the Raw data from D:\temp appears click Yes.
e Copy the Raw data from D:\temp to D:\FEE2.
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Data Collection Procedure for V2.2.1/
Processing Raw Data
Process the RAW data as follows:
1 Copy the FEE1.dat and FEE2.dat files (from the D:\FEE1
and D:\FEE2 folders, respectively) to the
c:\usr\diamond.root\bin folder.
2 In this folder's menu select Tools | Folder Options. The
Folder Options window appears (see Figure 74).
3 Select the View tab, uncheck the Hide extensions for
known file types box.
4 Click OK.
Figure 74:
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Data Collection Procedure for V2.2.1/
5 Rename FEE1.dat to MDU_1 and FEE2.dat to MDU_2. Do not use the .dat extension and make sure that the file
type has changed from DAT File to File.
Figure 75:
6 On the desktop double-click the Scanner application.
7 Press the Windows+D keys to show the desktop.
8 Double-click My Computer on the desktop.
9 Navigate to C:\Misc\.
10 Double-click StabilityTestOrionU.csh.
11 The following messages appear (see Figure 76 and Figure 77 on page 90. Click OK on each message.
Figure 76:
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Data Collection Procedure for V2.2.1/
Figure 77:
NOTE
If the message in Figure 77 appears, renew your Visa key and start again from Step 6 on page 89.
12 The main screen of the Module Stability application appears (see Figure 78). Click Start.
Figure 78:
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Data Collection Procedure for V2.2.1/
13 The program automatically finds the MDU_1 and MDU_2 files. You will be requested to confirm that you want to
perform the offline calculation (see Figure 79). Click OK. Once the calculation is finished, the MDU_1 and MDU_2
files will be removed from the ..\bin folder.
Figure 79:
14 Type in the DMS name in the DMS Name dialog box that appears (see Figure 80). Click OK.
NOTE
The name string must NOT include blank spaces. Use underscore (_) if required.
NOTE
The calculation results are saved to C:\usr\diamond.data\Physics log\Stability Test\DMSName.
Figure 80:
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Data Collection Procedure for V2.2.1/
Revert to the Gantry Normal Settings
Set the Gantry back to normal settings as follows:
1 Exit the FEE application.
2 Set back the Preference parameters to Default.
3 Log Off and restart the Host.
4 Press the Blue button to power OFF the Gantry.
5 Wait one minute and press the Blue button to power ON the Gantry.
6 Log On as CT and perform few validation scans.
Continue with Module Auto Stability Test on page 93.
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Module Auto Stability Test
Module Auto Stability Test
This section describes how to install and perform the Auto Stability Test. It includes the following topics:
•
Installing the Auto Stability Test on page 93
•
Running the Auto Stability Test on page 94
Installing the Auto Stability Test
Install the Auto Stability Test application as follows:
1 Insert the Brilliance CT 64 UDMS Configuration Module Auto Stability Test V2.3.0.1004 CD into the CD/DVD
drive.
The Philips_MS_Autostability_For_FSE window appears (see Figure 81).
Figure 81:
2 Click Next.
3 Follow the on-screen instructions to install the Auto Stability Test application.
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Module Auto Stability Test
Running the Auto Stability Test
Run the test as follows:
1 From the desktop ,double-click on the Autostability Gui icon. The Autostability Gui command window appears.
2 Wait until the AutoStability Test window appears (see Figure 82).
NOTE
Be patient. The AutoStability Test window can take up to one minute to appear.
Figure 82:
3 Follow the on-screen instructions to perform the test.
4 Swap the modules as suggested by the Auto Stability Test results.
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Module Map Form
Module Map Form
Click Here to open the Module Map form.
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Example 1
Appendix B: Image Quality Issues
This section contains some examples of the artifacts and their solution.
Pay attention to the possibility that the same artifact may be due to different reasons. Use the existing methods and
service tools to diagnose the problem before replacing the FRU.
Example 1
The Fee Bias test results are displayed in the following image:
Figure 83:
Figure 84:
Solution
1 DPU 4 seems to be defective, Swap DPU 4 with DPU 1.
2 If the faulty detectors moves, replace DPU 4.
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Example 2
Example 2
The DMS Noise test results show one side of the DMS with High noise reading.
Figure 85:
Solution
Replace the Vicor Power Supply.
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Example 3
Example 3
Rings in Head images.
Analyzing the Raw data indicates Air calibration is bad.
Figure 86: Bad Air Calibration
Figure 87: Good Air Calibration
Solution
Perform new Air calibration.
Example 4
Artifacts on Surview.
The artifact appears as horizontal lines on the surview in different places.
Analyzing the raw data shows the some detectores were sending bad information.
Solution
Replace the RCOM.
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Example 5
Example 5
Ring artifacts during scans while using very low dose: 25mAs.
Figure 88:
Solution
Physics department defines the minimum dose for each examination and patient coverage
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Example 6
Example 6
During HCOR calibration a massage appears on the screen: “Noise is too high“.
Solution
This is due to a misaligned phantom.
Re-adjust the phantom.
Example 7
After upgrading the software to V1.2.3, streaks appear on the 90 degree angle surview.
Figure 89: Artifact at Lateral Sureview
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Example 7
Suriview at 180 degree angle is Clear, without artifacts.
Figure 90:
The Raw plot shows dots on the image as in a module problem.
Figure 91:
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Example 7
Figure 92:
The raw data reading show high reading in the faulty detectors.
The issue is random and we can’t identify any bad Module.
Solution
Replace the RCOM.
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Example 8
Example 8
Artifacts in the image during Helix scans.
In Axial scans there are no artifacts.
Figure 93:
Figure 94: Raw
Solution
The artifacts appear in the images and not in the Raw. What we see in the RAW is the out site Detectors
Replace the BP.
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Example 9
Example 9
Intermittent bad images.
Solution
Replace the defective Refence Detector.
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Example 10
Example 10
Images with streaks
Figure 95: Streak Artifact
Figure 96: Plot of the Reference Detector Data
Solution
Replace the defective Reference Detector.
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Example 11
Example 11
•
The images on the Head scan are dark.
•
On Air calibration there seems to be an object in the FOV.
Dead
Modules 1-5
Figure 97: “Black image “
Figure 98: Plot displays the reason for the problem
Solution
Replace defective DPU1.
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Example 12
Example 12
•
Artifact in the image (like the disc in the middle of Figure 99 below) is an example of detector module instability.
Check room temperature stability, and DMS temperature.
Figure 99:
Solution
Perform an Air calibration.
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