8/3/2011 Exposure Indices: Indices: Implementation Status S. Jeff Shepard, MS, DABR, FAAPM Imaging Physics Department Diagnostic Imaging Division The University of Texas M. D. Anderson Cancer Center Houston, Texas AAPM 2011 Imaging Education Radiography III MDACC Imaging Physics Introduction Charge: • How is industry progressing in adoption of IEC 62494 Ed. 1? • Who is adopting recommended TG116 features? To what extent? Outline: • Review TG116 recommended features • Aimed and performance tests and QC • Not covered in IEC standard • The Vendor Survey • Vendor response details MDACC Imaging Physics 2 Implementation Survey 1. Please describe your company’s exposure index and deviation index. 2. If you do not display an exposure index, is your company in the process of developing an index of detector exposure after every image? 3. Does your company’s exposure index conform to the definitions in IEC 62494--1 Ed. 1? 62494 4. If not, what do you call your exposure index and what symbol do you use for it? • What are the units of your exposure index? • The relationship between radiation conditions (ie (ie dose or exposure) at the detector and the exposure index • Standard beam conditions under which the index is defined 5. Do your DR products currently provide an index equivalent to the Deviation Index described in IEC 6249462494-1 Ed. 1 immediately after every exposure? 6. If not, is your company in the process of developing an index that provides feedback information to the technologist user about the adequacy of the exposure? MDACC Imaging Physics 3 1 8/3/2011 Implementation Survey 7. What do you call your Deviation Index and what symbol do you use for it? 8. Do you provide other forms of feedback to the technologist user about the adequacy of the exposure (color bars, thermometers, etc)? 9. What default target EI’s have you established and how does the user selectively change these values? 10. Has your company implemented storage and transmission of the EI and DI information in the DICOM header of the image? (EI: (0018,1411), EITGT: (0018,1412), and DI: (0018,1413)). 11. What is the number of significant digits your company uses for EI and DI? 12. Is the Deviation Index (DI) recalculated and displayed immediately after any modification of the detected image VOI by the operator? 13. Is the display of segmented image pixels possible? 14. Can the segmented region be saved as an overlay and images be exported for archival or viewing using DICOM services? MDACC Imaging Physics 4 Implementation Survey 15. Is access to images containing forfor-processing pixel values (Q) possible on the console or through export using DICOM media storage? 16. Is the relationship between QK values and the standardized radiation exposure incident to the DR detector for tests of system performance provided to the user? 17. Is display of images without image processing (i.e., Q values) to report the mean, median, mode, standard deviation, and pixel count of values within ithi graphically hi ll defined d fi d regions i possible? ibl ? 18. Can the antianti-scatter grid be removed for calibration? 19. Can the KTGT values be imported and exported? 20. Are logs of the DI values and logs of the reasons for rejected and repeated images stored on the system? • • • • Are the rejected images stored on the system? Do you provide software to analyze the logs? Can the logs be accessed over a network from a remote location? In what file format are the logs kept? MDACC Imaging Physics 5 Implementation Survey 10 Vendors Invited 8 responded − Agfa Healthcare − Agfa Healthcare − Canon − Canon − Carestream Health − Carestream Health j USA − Fujifilm − Fujifilm USA − GE Healthcare − GE − ICRCo − ICRCo − Konica Konica--Minolta − Philips Medical Systems − Philips Medical Systems − Siemens Medical Systems − Siemens Medical Systems − Swissray MDACC Imaging Physics 6 2 8/3/2011 Do your indices conform to IEC 62494 Ed. 1? Vendor Implementation Status Agfa Yes (EI and DI) – On all new equipment Legacy systems can be upgraded (digitizer (plate reader) upgrade not required). C Canon Many legacy versions exist (RD, REX) – none are IEC compliant. L Latest (v ( 8.0) 8 0) is compliant l with h EI E only. l If f desired, d d newer NE software displays IEC compliant EI, and DI if EIT’s are entered. Carestream No, but new equipment will support IEC by 2012. Legacy EI will still be an option. Fujifilm Both a proprietary index and the IEC exposure indices are offered. IEC indices (EI and DI) comply. Either or both may be displayed. Proprietary index is S which does not comply with IEC. Do your indices conform to IEC 62494 ed. 1? Vendor Implementation Status Agfa Yes (EI and DI) – On all new equipment Legacy systems can be upgraded (digitizer (plate reader) upgrade not required). C Canon Many legacy versions exist (RD, REX) – none are IEC compliant. L Latest (v ( 8.0) 8 0) is compliant l with h EI E only. l If f desired, d d newer NE software displays IEC compliant EI, and DI if EIT’s are entered. Carestream No, but new equipment will support IEC by 2012. Legacy EI will still be an option. Fujifilm Both a proprietary index and the IEC exposure indices are offered. IEC indices (EI and DI) comply. Either or both may be displayed. Proprietary index is S which does not comply with IEC. Do your indices conform to IEC? Vendor Implementation Status GE Yes (EI and DI) – 2011 and later. Earlier products as described in TG116 Appendix (CDExp and UDExp). Does not apply to derived images (DES or Volume Rad). ICRCo No. Std beam does not conform. “Estimated Plate Dose” is equivalent to EI, but not compliant. Legacy index equivalent to DI but is called “EI”. Working on changing this. Philips Yes (EI only) – Eleva-based only (Digital Diagnost, PCR). Legacy equipment will not support. No DI yet. Siemens Yes (EI only) - On new equipment (YSIO, Luminos dRF and Luminos Agile). Legacy equipment will not support. No DI yet. 3 8/3/2011 Do your indices conform to IEC? Vendor Implementation Status GE Yes (EI and DI) – 2011 and later. Earlier products as described in TG116 Appendix (CDExp and UDExp). Does not apply to derived images (DES or Volume Rad). ICRCo q to EI,, but not compliant. p No. “Estimated Plate Dose” is equivalent (Std beam does not conform.) Legacy index equivalent to DI but is called “EI”. Working on changing this. Philips Yes (EI only) – Eleva-based only (Digital Diagnost, PCR). Legacy equipment will not support. No DI yet. Siemens Yes (EI only) - On new equipment (YSIO, Luminos dRF and Luminos Agile). Legacy equipment will not support. No DI yet. TG116 Recommended Features Target EI determination • IEC: EIT(b,v b,v)) tables to be established by “professional societies or by the Responsible Organization” (IEC 6060160601-1:2005, 3.101) • TG116: Established by the system administrator or the equipment manufacturer – Defaults provided by vendor as a starting point and then modified by the users to suit their preferences for noise content. 11 MDACC Imaging Physics Tools for Target EI Implementation Status Vendor Defaults Edits Agfa No Input by service engineer, “key operator”, or sys admin. NX workstation can automatically assign average of 50 exam views as target. Canon No User sets all EIT values via manual entry. Carestream Will be provided by 2012. Intended for manual customization by end user. Fujifilm July 2011, default target = 876 (Equivalent to S = 200, undergoing clinical review). Check with your Fujifilm representative for current default target values. EIT may be changed in the user utility. 4 8/3/2011 Tools for Target EI Implementation Status Vendor Defaults Edits Agfa No Input by service engineer, “key operator”, or sys admin. NX workstation can automatically assign average of 50 exam views as target. Canon No User sets all EIT values via manual entry. Carestream Will be provided by 2012. Intended for manual customization by end user. Fujifilm July 2011, default target = 876 (Equivalent to S = 200, undergoing clinical review). Check with your Fujifilm representative for current default target values. EIT may be changed in the user utility. Tools for Target EI Implementation Status Vendor Defaults Edits Agfa No Input by service engineer, “key operator”, or sys admin. NX workstation can automatically assign average of 50 exam views as target. Canon No User sets all EIT values via manual entry. Carestream Will be provided by 2012. Intended for manual customization by end user. Fujifilm July 2011, default target = 876 (Equivalent to S = 200, undergoing clinical review). Check with your Fujifilm representative for current default target values. EIT may be changed in the user utility. Target EI determination Implementation Status Vendor Defaults Edits GE GE provides default Target EI values. Intended for manual customization by end user. ICRCo Target plate exposure values are provided by ICRCo. The user cannot change the target values Philips NA NA Siemens No Maximum and minimum clinical EXI values can be defined in very organ program via selection of a parameter subset. 5 8/3/2011 Target EI determination Implementation Status Vendor Defaults Edits GE GE provides default Target EI values. Intended for manual customization by end user. ICRCo Target plate exposure values are provided by ICRCo. The user cannot change the target values Philips NA NA Maximum and minimum clinical EXI values can be defined in very organ program via selection of a parameter subset. Siemens No Target EI determination Implementation Status Vendor Defaults Edits GE GE provides default Target EI values. Intended for manual customization by end user. ICRCo Target plate exposure values are provided by ICRCo. The user cannot change the target values Philips NA NA Maximum and minimum clinical EXI values can be defined in very organ program via selection of a parameter subset. Siemens No Target EI determination Implementation Status Vendor Defaults Edits GE GE provides default Target EI values. Intended for manual customization by end user. ICRCo Target plate exposure values are provided by ICRCo. The user cannot change the target values Philips NA (pending future roll-out) NA (pending future roll-out) Siemens No Maximum and minimum clinical EXI values can be defined in very organ program via selection of a parameter subset. 6 8/3/2011 TG116 Recommended Features Use graphics to enhance reporting of DI • Sliding bar • Color Color--coded tools (Thermometer) • VOI histogram with limits indicated MDACC Imaging Physics MDACC Imaging Physics MDACC Imaging Physics 19 20 21 7 8/3/2011 Graphical Feedback for DI Vendor Implementation Status Agfa Yes - Displayed numerically and in graphical form using a color bar. The length of the bar increases as the Deviation Index increases or decreases from 0. Green, Yellow or Red depending on difference from 0. Canon Histogram chart displayed. (Limits?) Carestream DI message turns Red. Fujifilm Pop-up notification if EI Limits established and exceeded. GE Yes – DI displayed as a number placed within a “bar” consisting of 5 segments (4 user-customizable thresholds, inner and outer). The segment color is GREEN for DI within the inner thresholds, ORANGE otherwise. A message is also displayed (customizable) by segment. ICRCo Yes. Acceptable is Green, unacceptable is Red (high or low). Philips and Siemens N/A Graphical Feedback for DI Vendor Implementation Status Agfa Yes - Displayed numerically and in graphical form using a color bar. The length of the bar increases as the Deviation Index increases or decreases from 0. Green, Yellow or Red depending on difference from 0. Canon Histogram chart displayed. Carestream DI message turns Red. Fujifilm Pop-up notification if EI Limits established and exceeded. GE Yes – DI displayed as a number placed within a “bar” consisting of 5 segments (4 user-customizable thresholds, inner and outer). The segment color is GREEN for DI within the inner thresholds, ORANGE otherwise. A message is also displayed (customizable) by segment. ICRCo Yes. Acceptable is Green, unacceptable is Red (high or low). Philips and Siemens N/A 8 8/3/2011 Graphical Feedback for DI Vendor Implementation Status Agfa Yes - Displayed numerically and in graphical form using a color bar. The length of the bar increases as the Deviation Index increases or decreases from 0. Green, Yellow or Red depending on difference from 0. Canon Histogram chart displayed. Carestream DI message turns Red. Fujifilm Pop-up notification if EI Limits established and exceeded. GE Yes – DI displayed as a number placed within a “bar” consisting of 5 segments (4 user-customizable thresholds, inner and outer). The segment color is GREEN for DI within the inner thresholds, ORANGE otherwise. A message is also displayed (customizable) by segment. ICRCo Yes. Acceptable is Green, unacceptable is Red (high or low). Philips and Siemens N/A Graphical Feedback for DI Vendor Implementation Status Agfa Yes - Displayed numerically and in graphical form using a color bar. The length of the bar increases as the Deviation Index increases or decreases from 0. Green, Yellow or Red depending on difference from 0. Canon Histogram chart displayed. Carestream DI message turns Red. Fujifilm Pop-up notification if EI Limits established and exceeded. GE Yes – DI displayed as a number placed within a “bar” consisting of 5 segments (4 user-customizable thresholds, inner and outer). The segment color is GREEN for DI within the inner thresholds, ORANGE otherwise. A message is also displayed (customizable) by segment. ICRCo Yes. Acceptable is Green, unacceptable is Red (high or low). Philips and Siemens N/A Graphical Feedback for DI Vendor Implementation Status Agfa Yes - Displayed numerically and in graphical form using a color bar. The length of the bar increases as the Deviation Index increases or decreases from 0. Green, Yellow or Red depending on difference from 0. Canon Histogram chart displayed. Carestream DI message turns Red. Fujifilm Pop-up notification if EI Limits established and exceeded. GE Yes – DI displayed as a number placed within a “bar” consisting of 5 segments (4 user-customizable thresholds, inner and outer). The segment color is GREEN for DI within the inner thresholds, ORANGE otherwise. A message is also displayed (customizable) by segment. ICRCo Yes. Acceptable is Green, unacceptable is Red (high or low). Philips and Siemens N/A 9 8/3/2011 TG116 Recommended Features IEC and TG116 call for the indices to change dynamically with manual modification of the VOI after image acquisition • Due to failure of VOI recognition MDACC Imaging Physics 28 Indices change with postpostacquisition VOI modification Vendor Implementation Status Agfa Yes Canon No. The user cannot change the VOI. Carestream Yes Fujifilm Yes, when the exposure menu is changed and the image is reprocessed. GE Yes – with change in electronic collimation (shuttering). ICRCo No Philips N/A Siemens Yes Indices change with postpostacquisition VOI modification Vendor Implementation Status Agfa Yes Canon No. The user cannot change the VOI. Carestream Yes Fujifilm Yes, when the exposure menu is changed and the image is reprocessed. GE Yes – with change in electronic collimation (shuttering). ICRCo No, (Will not re-calculate) Philips N/A Siemens Yes 10 8/3/2011 TG116 Recommended Features Tools for verification of proper automated segmentation software result • Overlay image of pixels normalized pixel values (QK) – Export of segmented pixels as an overlay • Pop Pop--up display of the ForFor-Processing pixel (Q) histogram with highlighted min and max image pixels 31 MDACC Imaging Physics Segmentation Verification Tools Vendor Implementation Status Segmented pixels can be displayed as overlay? Exportable? Agfa The area outside of the segmented pixels can be masked by a semi-transparent border (adjustable No opacity). Canon No No The system will display the region of the image Carestream segmented by the black surround mask (basically the x-ray collimated region). Yes Fujifilm No No GE No No ICRCo No (Eventually, yes) No (Eventually) Philips Yes No Siemens No No Segmentation Verification Tools Vendor Implementation Status Segmented pixels can be displayed as overlay? Exportable? Agfa The area outside of the segmented pixels can be masked by a semi-transparent border (adjustable No opacity). Canon No No The system will display the region of the image Carestream segmented by the black surround mask (basically the x-ray collimated region). Yes Fujifilm No No GE No No ICRCo No (Eventually, yes) No (Eventually) Philips Yes No Siemens No No 11 8/3/2011 Segmentation Verification Tools Vendor Implementation Status Segmented pixels can be displayed as overlay? Exportable? Agfa The area outside of the segmented pixels can be masked by a semi-transparent border (adjustable No opacity). Canon No No The system will display the region of the image Carestream segmented by the black surround mask (basically the x-ray collimated region). Yes Fujifilm No No GE No No ICRCo No (Eventually, yes) No (Eventually) Philips Yes No Siemens No No Segmentation Verification Tools Vendor Implementation Status Segmented pixels can be displayed as overlay? Exportable? Agfa The area outside of the segmented pixels can be masked by a semi-transparent border (adjustable No opacity). Canon No No The system will display the region of the image Carestream segmented by the black surround mask (basically the x-ray collimated region). Yes Fujifilm No No GE No No ICRCo No (Eventually, yes) No (Eventually) Philips Yes No Siemens No No TG116 Recommended Features Deviation Index Format • DI = 0 is supposed to be a perfect exposure, but the precision of the DI (# decimal places) will have impact – Round? Truncate? – Is +1 really 0.5 or 1.4 (12% or 38% high)? – TG116: One digit before/after the decimal to reflect subtle exposure errors and facilitate trend analysis – IEC: Undefined MDACC Imaging Physics 36 12 8/3/2011 TG116 Recommended Features The DICOM header • • • • EI: (0018,1411) EIT: (0018,1412) DI: (0018,1413) DICOM Value Representation is DS (Decimal String) with optional # of characters before/after decimal • Not all vendors support this 37 MDACC Imaging Physics Deviation Index Format & DICOM Tag support Implementation Status Vendor Format DICOM Tags Supported? Agfa 2 digits after the decimal Canon 2 decimal places Yes No Carestream 2 digits after the decimal Yes Fujifilm 1 digit after the decimal Yes GE 1 digit after the decimal Yes ICRCo 3 digits after the decimal No Philips Integer (no changes planned) No Siemens Integer Yes Deviation Index Format & DICOM Tag support Implementation Status Vendor Format Agfa 2 digits after the decimal Canon 2 decimal places DICOM Tags Supported? Yes No Carestream 2 digits after the decimal Yes Fujifilm 1 digit after the decimal Yes GE 1 digit after the decimal Yes ICRCo 3 digits after the decimal No Philips Integer (no changes planned) No Siemens Integer Yes 13 8/3/2011 Deviation Index Format & DICOM Tag support Implementation Status Vendor Format DICOM Tags Supported? Agfa 2 digits after the decimal Yes Canon 2 decimal places No Carestream 2 digits after the decimal Yes Fujifilm 1 digit after the decimal Yes GE 1 digit after the decimal Yes ICRCo 3 digits after the decimal No Philips Integer (no changes planned) No Siemens Integer Yes TG116 Recommended Features Export and import KTGT (EIT) • A process for updating the tables of all systems within a networked system – Changes in EIT values readily disseminated to distributed systems • Facilitate sharing between imaging facilities using the same DR system MDACC Imaging Physics 41 Export and Import of EIT Tables Vendor Agfa Canon Implementation Status Yes. EIT values can be shared between NX modality workstations, too. EIT values can be exported and imported within the protocol database between systems. But there is no provision to independently import or export a table of values. Carestream Yes. Yes Fujifilm Yes. GE Export, yes. Import, No. ICRCo No response Philips N/A Siemens Yes (via USB) 14 8/3/2011 Export and Import of EIT Tables Vendor Agfa Canon Implementation Status Yes. EIT values can be shared between NX modality workstations, too. EIT values can be exported and imported within the protocol database between systems. But there is no provision to independently import or export a table of values. Carestream Yes. Yes Fujifilm Yes. GE Export, yes. Import, No. ICRCo No response Philips N/A Siemens Yes (via USB) Export and Import of EIT Tables Vendor Agfa Canon Implementation Status Yes. EIT values can be shared between NX modality workstations, too. EIT values can be exported and imported within the protocol database between systems. But there is no provision to independently import or export a table of values. Carestream Yes. Yes Fujifilm Yes. GE Export, yes. Import, No. ICRCo No response Philips N/A Siemens Yes (via USB) Export and Import of EIT Tables Vendor Agfa Canon Implementation Status Yes. EIT values can be shared between NX modality workstations, too. EIT values can be exported and imported within the protocol database between systems. But there is no provision to independently import or export a table of values. Carestream Yes. Yes Fujifilm Yes. GE Export, yes. Import, No. ICRCo No response Philips N/A Siemens Yes (via USB) 15 8/3/2011 Export and Import of EIT Tables Vendor Implementation Status Yes. EIT values can be shared between NX modality workstations, Agfa too. EIT values can be exported and imported within the protocol database between systems. But there is no provision to independently import or export a table of values. Canon Carestream Yes. Yes Fujifilm Yes. GE Export, yes. Import, No. ICRCo No response NA (pending future roll-out) Philips Siemens Yes (via USB) TG116 Recommended Features Tests of system performance and calibration verification in the clinic • Removable grid • Access to images containing normalized for--processing pixel values for – On the console – Through export using DICOM media storage • Images with pixel values linear with exposure – For MTF, NPS, and DQE – Provide the relationship between QK and standard exposure if nonnon-linear 47 MDACC Imaging Physics Tests of system performance and calibration Implementation Status Vendor QK and exposure Removable grid For-processing images at console DICOM Export to Media Agfa Yes (upon request) N/A Yes, on the NX WS only Yes, from the NX WS only (Log E) Canon No N/A No No Yes (Pattern processing, Log E) Carestream Yes Yes Yes (Pattern processing) – ROI tools provided, too Fujifilm Non responsive Yes No No GE “Sensitivity” value Yes is conversion factor Yes Yes 16 8/3/2011 Tests of system performance and calibration Implementation Status Vendor QK and exposure Removable grid For-processing images at console DICOM Export to Media Agfa Yes (upon request) N/A Yes, on the NX WS only Yes, from the NX WS only (Log E) Canon No N/A No No Yes (Pattern processing, Log E) Carestream Yes Yes Yes (Pattern processing) – ROI tools provided, too Fujifilm Non responsive Yes No No GE “Sensitivity” value Yes is conversion factor Yes Yes Tests of system performance and calibration Implementation Status Forprocessing images at console Vendor QK and exposure ICRCo Future “Our calibration pr c dur is d procedure done n without the use of anti-scatter grid.” Philips No Yes, but calibration is performed with the Yes grid. Siemens Yes Yes Removable grid Future DICOM Export to Media Yes Yes No. “Physical EI” is an No response indicator of QK values. Tests of system performance and calibration Implementation Status Forprocessing images at console Vendor QK and exposure ICRCo Future “Our calibration pr c dur is d procedure done n without the use of anti-scatter grid.” Philips No Yes, but calibration is performed with the Yes grid. Siemens Yes Yes Removable grid Future No. “Physical EI” is an indicator of QK values. DICOM Export to Media Yes Yes No response 17 8/3/2011 TG116 Recommended Features Logs of EI/DI values and logs of the reasons for rejected and repeated images • Identify potential problematic exams • Problems with equipment • Technologists in need of coaching • Software to analyze the logs to assist with process improvement – EnterpriseEnterprise-wide software for centralized data accumulation and analysis • For every rejected image, store: – Anatomical view selection – Technique factor information – The image itself 52 MDACC Imaging Physics DI and Repeat/Reject Logs Implementation Status Vendor DI logs stored? Repeat/Reject logs stored? Agfa Yes, on the NX modality workstation Yes, on the NX modality workstation Canon No, but planned No Yes Yes Carestream Fujifilm GE No response Yes Yes Yes ICRCo No Yes Philips N/A Yes DI, No. EI, Yes Yes Siemens DI and Repeat/Reject Logs Implementation Status Vendor Software to analyze logs provided? Rejected images stored? Yes, on the NX modality workstation Yes, on the NX workstation (Cache). Can also be exported to a PACS. Canon No Yes Carestream Yes Yes Fujifilm Yes Yes Yes (RRA function) Jpeg, for 100 days ICRCo No response No response Philips Yes Yes Siemens No Yes Agfa GE 18 8/3/2011 DI and Repeat/Reject Logs Implementation Status Vendor Logs accessible over a network? Data format Agfa CMS enables user access to multiple NX workstations for system-wide QC XML Canon No (Folder can be “shared”) shared ) CSV Carestream Yes CSV Fujifilm No CSV GE No CSV ICRCo No response No response Philips Future Proprietary (export as CSV) No (USB only) CSV Siemens DI and Repeat/Reject Logs Implementation Status Vendor Logs accessible over a network? Data format Agfa CMS enables user access to multiple NX workstations for system-wide QC XML Canon No (Folder can be “shared”) shared ) CSV Carestream Yes CSV Fujifilm No CSV GE No CSV ICRCo No response No response Philips Future Proprietary (export as CSV) No (USB only) CSV Siemens Summary Agfa Canon Carestream Fujifilm GE ICRCo IEC EI Conformance Y Y N* Y Y N* Y IEC DI Conformance Y Y N* Y Y N* N* N* EIT defaults N N N* Y Y Y NA N* EIT defaults editable Y Y Y Y Y N NA NA Graphical Feedback on DI Y ? Y Y Y NA NA NA Recalc Indices after VOI change Y N Y Y Y N NA Y VOI Overlay Y N Y N N N* Y N Export VOI Overlay N N Y N N N* N N DI Format Y Y Y Y Y Y N N DICOM Tags g Y N Y Y Y N N Y Export/Import EIT Y ? Y Y Y/N ? N/A QK vs Exposure Y N Y ? Y N* N Y Removable Grid N/A N/A Y Y Y N/A Y Y For-Processing Display Y N Y N Y N* Y N For-Processing Export Y N Y N Y Y Y ? DI Logs stored Y N* Y ? Y N NA NA Repeat/Reject Logs Y N Y Y Y Y Y Y Rejected Images Stored Y Y Y Y Y ? Y Y Log Analysis SW Y N Y Y Y N Y N Log Analysis SW Y N Y Y Y ? Y N Logs accessible via network Y N Y N N ? N* N CSV Format N Y Y Y Y ? Y Y 19 7 19 16 18 5 10 8 Vendor By 2012 Philips Siemens Y Y 19 8/3/2011 THANK YOU! Bruce Apgar (Agfa) Steve Meyer (Canon) John (Ian) Yorkston (Carestream Carestream)) Bob Uzenoff (Fujifilm, MITA) K d Jabri Kadri b (GE) Abhinav Singh ((ICRCo ICRCo)) Ulrich Neitzel (Philips) Viola Fernandez (Siemens) Mike Flynn David Leong Questions? jshepard@mdanderson.org 20