2 4 6 Digital Imaging and Communications in Medicine (DICOM) 8 Supplement 169: Simplified Adult Echocardiography Report 10 12 14 16 18 20 22 DICOM Standards Committee 1300 N. 17th Street, Suite 900 24 Rosslyn, Virginia 22209 USA 26 Version: Working Draft, Jan 7, 2014 28 Developed pursuant to DICOM Work Item 2012-11-A 30 Supplement TBA: Simplified Adult Echocardiography Report Page 2 Table of Contents 32 34 36 38 40 42 44 46 48 Scope and Field .............................................................................................................................................. 3 Concepts ......................................................................................................................................................... 3 TODO .............................................................................................................................................................. 4 OPEN ISSUES ................................................................................................................................................ 5 CLOSED ISSUES ........................................................................................................................................... 8 Changes to NEMA Standards Publication PS 3.2-2011 ............................................................................... 11 Changes to NEMA Standards Publication PS 3.3-2011 ............................................................................... 11 Changes to NEMA Standards Publication PS 3.16-2011 ............................................................................. 12 SIMPLIFIED ADULT ECHOCARDIOGRAPHY TEMPLATES ............................................................... 12 TID 5QQQ Echocardiography Procedure Report ................................................................. 12 TID 5QQY Pre-coordinated Echo Measurement .................................................................. 14 TID 5QQZ Post-coordinated Echo Measurement ................................................................ 15 CID newcid1 Echo Derivation .................................................................................................. 17 Changes to NEMA Standards Publication PS 3.17-2011 ............................................................................. 21 ANNEX ??: Mapping Guidance? Population Guidance? (Informative) ........................................................ 22 Supplement TBA: Simplified Adult Echocardiography Report Page 3 50 52 Scope and Field This supplement to the DICOM Standard introduces a simplified SR template for Adult Echocardiography measurements. 54 It provides similar content to that of TID 5200 while addressing details that were the source of interoperability issues; in particular, varying degrees and patterns of pre- and post-coordination, multiple codes for the same concept and numerous optional descriptive modifiers. 56 The new template will be driven significantly by currently documented ASE Guidelines and Standards. 58 Concepts This text introduces concepts, principles, guidelines and convenient terms discussed by the committee that influenced the contents of the supplement. It may help reviewers better understand the material. If it still appears to be useful to implementers when the supplement moves to letter ballot it will likely be 62 incorporated into a section in Part 17. 60 64 Section containers and headings are not used in the new template. Receivers may choose group measurements based on Finding Site or some other logic as they see fit. 66 <Note the distinction between SR being acquisition/evidence and the other side being findings which are more CDA/etc> Finding Site: The location at which the measurement was taken. While some measurements will be a measurement of the structure of the finding site itself, other measurements will measure something like 70 flow in which case the Finding Site is simply the location, not the subject of the measurement. 68 72 Method: Allows distinguishing between two measurements that tell you the same thing, derived in a different way. If two measurements tell you something different, it's not a method. 74 <<If we want to “improve” the definition of a LOINC code, we basically have to get a new code assigned to our improved definition. Retiring the old code is optional>> 76 Supplement TBA: Simplified Adult Echocardiography Report Page 4 TODO DONE Set up a Concepts Section with a “useful/important distinctions” subsection to capture them as we go. DONE REVIEW how this handles selection and min/max/avg, etc. for the Core set DONE Choose between TID 5201 and TID 3602 3602 (used by FPC Echo) is more complete and has more mandatory elements Go with 3602 – it means that technically a cart shouldn’t send an object without requiring the tech to input a height weight. DONE Review TID 5220 Fetal Pediatric Congenital for additional elements to include/harmonize with Review Stress Echo template for template elements to consider/include Review CID 12280 and 12281 Confirm if ASE specifies units and whether those match Propose additional measurements “common to most vendors” – Paul will post an initial spreadsheet for consideration. REDISCUSS Put a note in part 17 that all indexed values in the body of the report must use the same index value (e.g. BSA) from the Patient Characteristics sub-template. Submit a CP to change “Image or Spatial Coordinates” to “Spatial Coordinates or Image”. The former was confusing for some people, implying it was Coordinates that could either be image coordinates or spatial coordinates. Consider how consuming systems will handle Derivation (Min/Max/Mean/Selected). e.g. if you have three measurements and a fourth that says ”Mean”, is it clear what to do.>> <<Seems reasonable for consumers to accomodate this>> WG-6 Questions: Does it matter if LOINC doesn’t specify units? What if they use something odd? Useful Tables: CID 12227 CID 12226 CID 12224 CID 12250 CID 12222 CID 12233 CID 12236 Echocardiography Measurement Methods Echocardiography Image Views Ultrasound Image Modes Cardiac Ultrasound Common Linear Measurements Orifice Flow Properties Cardiac Phases Echo Anatomic Sites Future Meetings: 2014 AIUM Las Vegas, NV 3/29/2014 – 4/2/2014 2015 AIUM Orlando, FL 3/21/2015 – 3/25/2015 2016 AIUM Las Vegas, NV 3/19/2016 – 3/23/2016 78 Supplement TBA: Simplified Adult Echocardiography Report Page 5 OPEN ISSUES Scope S1 Should TID 5200 (the original) be retired when the new TID is introduced? A: Yes. Probably depends on how we support vendor-specific and user-defined. Should hopefully retire it. We can still ship products that are capable of sending 5200, but new products probably shouldn’t bother. If we offer two Adult Echo templates, some percentage of novice vendors will choose 5200 without understanding the implications. S2 Is it necessary/practical to guarantee convertability from Old-to-New SOP? A: Guarantee, no. But try to keep it tractable. Doing so would prevent making new information mandatory which would also restrict harmonization with newer templates. Could allow systems to output both and let recipients choose to use the new? Note that a system that can’t fill in values could omit the measurement from the converted new SOP. S5 Have other international groups published “Core Set” papers we should include? Get Public Comment input - Look into JIRA (Japan) and EAE (Europe) S6 What is needed to address both the processing and reporting systems on the consuming side? Processing may want to tweak/select direct measurements and recalculate derived measurements. Reporting might want to just reach in for a single value. Need to encourage adoption. Note that some of the job is for the consuming system to filter/simplify based on its needs. One concept is to have a “summary” section. Another concepts is for the Cart to output two instances of the same IOD, one is sparse/summary (reporting), the other is more complete (processing). S7 What is needed to handle “vendor-specific” measurements (beyond core)? What information gets recorded (eg display/screen name of the measurement on the original cart) How does it get slotted into the database, and who does that configuration? Supplement TBA: Simplified Adult Echocardiography Report Page 6 S8 Can the vendor-specific strategy also be used for user-defined measurements? Maybe this is the root case and vendor-specific is just user-defined where the vendor is a user? Maybe the vendor presets are just too hard to navigate. Note that part of the problem is that these may not be well modelled. They “just want a label and a number” but then later they want intelligent handling of the data they have handicapped. S9 How should the core set be expanded to include some common vendor-specific ones? S10 How/Should vendor education be addressed? The new template makes finer distinctions than the old template. To reduce the validation load on the consuming systems, confidence is needed that the producing system is in fact taking the distinctions into account. E.g. Systole, vs End Systole, vs Atrial Systole. So if the pre-coordinated code means exactly End Systole, then don’t use the pre-coordinated code if the system measures at mid-systole. What kind of a process should WG12 have (if any) to monitor and react to updates from ASE? Structure St2 Should the list of Core Measurements be included directly in RID rows, or dereference through CID tables? Strongly consider TIDs. This would allow making some measurements conditional on other measurements and explicitly making units required, etc. Since there are 150-200 core measurements, might want to break out a few sub TIDs to make it more readable/manageable. St1 Create a new SOP Class? A: Yes. We will create a template and will give it a new UID. This allows negotiation for the new template (and allows systems to reject the new template if they don’t support it). The contents still parse and process as SR (i.e. dsrdump still works, parsers don’t need to be changed, etc.) Of course the template can still be sent inside a generic SR SOP Class. Could this be handled with extended negotiation? Has anyone implemented it? How do we deal with the Average of several instances and the Selector of several instances? Should the Core Spreadsheet be maintained? The sorting and filtering and parsing could be very handy. C9 Coding Do the Cardiac Phase/Cycle semantics refer to Mechanical or Electrical and the Chamber or the Organ? Most clear is to refer to the chamber. And be clear in the definition about time point vs time period Supplement TBA: Simplified Adult Echocardiography Report Page 7 and if needed time point at the end, not mid. Could allow that if not fully specified, the default chamber is the Left Ventricle, i.e. End Systole = Left Ventricle End Systole If just systole or diastole is referred to, it means the period of the full duration of systole or diastole. Often the code meaning will refer to Systolic X. Pre-coordinate but work off the codeset in CID 12233 (but need clear definitions, does SNOMED provide them?) C10 Should missing codes be added in LOINC, SNOMED or DICOM? Most of the existing (mostly) pre-coordinated codes are from LOINC, most of the existing postcoordinated concepts are from SNOMED. When fully pre-coordinated codes exist in both, let’s prefer LOINC. If we don’t have LOINC, but we do have SNOMED, do we still ask LOINC for a new code, or do we just use the SNOMED? YES. If you need a LOINC measurement code, ask for one. For now, use DICOM Supp placeholder codes and consider this closer to or during Public Comment. Need to review the new LOINC codes introduced in Sup 78 and use if possible. C11 How should values that have to be estimated by the operator/clinician be addressed? Need to allow the method for some measurements to be “estimated”. Should perhaps mandate that if there are derived/calculated values, then all input values must be included in the SR as well so it will be recorded if some inputs are estimated. May also need to use the tools to point specifically to the values that were used in a given equation. C13 Does Hand Grip and Valsalva need to be encoded (in association with specific measurements)? C14 What needs to be captured about the package/pre-processing before the measurement? E.g. if presence of special speckle tracking or proprietary segmentation, where does that fit in? Or is this about a unique method or a unique measurement vs about the package that was used. Do we need to record Stress Stage in a pre-coordinated way for each or specific measurements? Is this better recorded at a higher level in the object? (would force separate objects for different stages) Finding Site – is it the structure measured, the location where a measurement was taken, etc. Strong admiration of the problem. Mostly we get to avoid this by pre-coordinating the codes then there IS no Finding Site. But we will need to revisit when we consider user-defined measurements or “annotating modifiers” Do we have a need for grouping? Supplement TBA: Simplified Adult Echocardiography Report Page 8 Method modifier? It’s what we add new ones of most. Sometimes it matters. Consider the difference between a value, like velocity, that can be directly measured or can be derived from an equation. In the case of precoordination this is less of an issue since we simply explain which it is, but needs consideration for user-defined. Adding new methods has a rollout challenge Note that DCM 125212 is underspecified relative to the other codes that follow it. Supplemental information No modifiers on core measurements "For some attributes (e.g. the Image View for the Right Ventricule Free Wall Thickness) multiple valid values exist and we don't really care which it is (mdc). Prohibit senders from sending it (rather than allowing senders to code it and receivers to ignore it). Most importantly, we don't want transmission to fail because the receiver has trouble handling it." Do we want to differentiate equation/derived “measurements” from those measured directly? The derived don’t exactly have a view/mode/etc, or may be derived from elements in several views/modes/etc. CLOSED ISSUES 80 Scope S3 Should Cardiovascular History be reiterated in the Echo SR? A: No. If the worklist provides it, it might be OK to suggest it be copied, but otherwise, the Cart is not likely to have access to this information unless the tech does manual data entry, in which case, it’s not clear that the cart console is the best place/GUI to be typing it in. It would be better done by a clerical person on another system (e.g. the HIS, the RIS or the CVIS). Note that Indications have been included. Perhaps the same logic applies to those. S4 What is in the core list of measurements? A: The full set of concepts from the ASE papers, as collated in the ASE Core spreadsheet. (about 150 currently) plus additional measurements proposed by vendors and found to be reasonably “common”. No new papers have come out recently so the original work stands (spanning 1989ish to 2012ish) Structure Supplement TBA: Simplified Adult Echocardiography Report Page 9 St3 Should the TID Row Order be Significant or Insignificant? A: Assume insignificant until a need is found for it to be significant. Order significant would be a harder for producer but might be easier for consumers. Coding C1 Should the code meanings use uniform terminology or colloquial terminology? A: Use uniform but don’t be pedantic. Colloquial is somewhat random which might lead to coding errors. Use uniform terms unless they get too unwieldy. In any case, Apps can display them in the GUI/report any way they like. C2 Bias toward pre-coordination or post-coordination? A. Pre-coordination. • Make it mandatory • Do not include modifiers [Structure/Location/Finding Site] [Observable][Flow Direction?] [Cardiac Phase] [Method] etc See Google Doc. Would it be bad to allow lots of modifiers that reiterate semantics in the pre-coordinated code to allow “dumb” applications to handle new codes in some way (e.g. add to the For example some measurements will have “View not specified” since we don’t care and don’t want codes for all the different variants. <Do we allow a measurement to add a detail like view to a NOS code> C3 But maybe we say that user measurements are completely post-coordinated and all modifiers are mandatory. But what process is this facilitating, and would it be better just to do the Conformance statement. Might want to have a user-defined-measurement flag (beyond the private coding scheme?) And we might want to put the vendor and user defined measurements in another group/container. Note that we will have to enforce some level of discipline on the user when creating/configuring new measurements. How can reasonable consistency of units be achieved? A: Stick to what is stated in ASE, but flag & discuss deviations from the following: Distance in cm Area in cm2 (except BSA in m2) Velocity in m/s (except Tissue Doppler in cm/s) Time in ms Volume in ml Mass in g Flow in ml/s Systems are welcome to do conversions when displaying measurements to users if some sites/users have preferences that differ from the standard. Supplement TBA: Simplified Adult Echocardiography Report Page 10 C4 Should $DerivationParameter, $Equation, or $Table be encoded? A: No. They add complexity. Few creators use them. Few consumers support them (or else they get derailed when they are provided). For the core set the equation is pre-coordinated in the measurement. For user-defined measurements, it seems unlikely that consumers would parse/recomputed the value even if the equation was included in-band, rather than just documenting it out of band. Arguably, equations could be stuffed in the Code Meaning of the $Method (which is done in a couple of places in Part 16), since the only real user might be the clinician wanting to know what equation was used, but usually they are named, not expressed. Anyone with a concrete Echo use case for these should present it. (They are used somewhat in OB for the GA calculations) C5 Should $Quotation be encoded? A: No. It adds complexity. Few creators use it. Few consumers support it (or else they get derailed when they are provided). Anyone with a concrete Echo use case for these should present it. C6 Should $Equivalent Meaning of Concept Name be encoded? A: No. It adds complexity. Few creators use it. Few consumers support it (or else they get derailed when they are provided). Anyone with a concrete Echo use case for these should present it. C7 Should $Laterality and $Topographical Modifier be encoded? A: No. Don’t need them for Cardiology (although vascular does). Left/right chambers are not laterality. Proximal/Distal/etc is not relevant. Anyone with a concrete Echo use case for these should present it. C8 C12 Should $Measurement Properties be encoded? A: No. It adds complexity (normality codes, level of significance, statistical properties, ranges, range authorities). Few if any creators use it. Few consumers support it (or else they get derailed when they are provided). Anyone with a concrete Echo use case for these should present it. The Selection Method concept is useful though. It will be migrated into the Derivation. Do Flow Direction semantics refer to the viewpoint of the probe or anatomy? A: Anatomy is most clinically useful (see CID 12221). While the probe knows towards/away, the app must help figure out the anatomic. Supplement TBA: Simplified Adult Echocardiography Report Page 11 82 Changes to NEMA Standards Publication PS 3.2-2011 Digital Imaging and Communications in Medicine (DICOM) 84 Part 2: Conformance 86 Add Section: 88 Describe documentation of vendor specific measurements. For example, the format could require that you document the view, the mode, the method, etc, etc, etc 90 92 Changes to NEMA Standards Publication PS 3.3-2011 94 Digital Imaging and Communications in Medicine (DICOM) Part 3: Information Object Definitions 96 Add new SOP Class if needed: 98 <Likely needed but still a point of discussion> 100 Supplement TBA: Simplified Adult Echocardiography Report Page 12 Changes to NEMA Standards Publication PS 3.16-2011 102 Digital Imaging and Communications in Medicine (DICOM) Part 16: Content Mapping Resource 104 106 Add new Section? to Annex A SIMPLIFIED ADULT ECHOCARDIOGRAPHY TEMPLATES 108 The templates that comprise the Simplified Adult Echocardiography Report are interconnected as in Figure A-x.1 TID 5QQQ Simplified Echo Procedure Report TID 1204 Language of Content Item and Descendants TID 1001 Observation Context TID 3602 Cardiovascular Patient Characteristics TID 5QQY Precoordinated Echo Measurement TID 5QQZ Postcoordinated Echo Measurement TID 5204 Wall Motion Analysis 110 Figure A.x-1: Echocardiography Procedure Report Template Structure 112 TID 5QQQ Echocardiography Procedure Report 114 This template forms the top of a content tree that allows an ultrasound device to describe the results of an adult echocardiography imaging procedure. Supplement TBA: Simplified Adult Echocardiography Report Page 13 116 It is instantiated at the root node. It can also be included in other templates that need to incorporate echocardiography findings into another report as quoted evidence. 118 NL Rel with Parent 1 VT TID 5QQQ – Simplified Echo Procedure Report Type: Extensible Order: Insignificant Concept Name VM Req Cond Value Set Constraint Type ition CONTAINER EV (125200, DCM, “Adult Echocardiography Procedure Report”) HAS INCLUDE DTID (1204) Language of CONCEPT Content Item and Descendants MOD HAS OBS INCLUDE DTID (1001) Observation CONTEXT Context CONTAINS CONTAINER EV (121109, DCM, “Indications for Procedure”) 1 M 1 U 1 M 1 U 2 > 3 > 4 > 5 >> CONTAINS CODE EV (121071, DCM, “Finding”) 1-n U 6 >> CONTAINS TEXT EV (121071, DCM, “Finding”) 1 U 7 > 8 >> 9 > CONTAINS CONTAINER DT (121064, DCM, “Current 1 Procedure Descriptions”) CONTAINS CODE DT (125203, DCM, “Acquisition 1-n Protocol”) CONTAINS INCLUDE DTID (3602) Cardiovascular 1 Patient Characteristics 10 > 11 >> CONTAINS CONTAINER EV (111028, DCM, “Image Library”) CONTAINS IMAGE No purpose of reference DCID (12246) Cardiac Ultrasound Indication for Study U M U 1 U 1-n M BCID (12001) Ultrasound Protocol Types REVIEW <<Note there are some mandatory contents but it is currently optional to include the module>> Consider if we want to have a container here for the pre-coords to be a midpoint between Order significant and Order non. Could also consider requiring they be sorted by code value (which is predictable/non-random and simple to implement) <<For the purpose of sup dev, will likely break up the following into a few anatomically grouped tables and maybe merge them all at the end>> $Measurement = Aortic Valve Annulus Diameter (LN, 18016-6) 20 > CONTAINS INCLUDE DTID (5QQY) Pre-coordinated Echo Measurement 1-n U 21 > CONTAINS INCLUDE DTID (5QQY) Pre-coordinated Echo Measurement 1-n U $Units = EV (cm, UCUM, “centimeter”) $Measurement = Aortic Valve Velocity-Time Integral (LN, 18169-3) 21 > CONTAINS INCLUDE DTID (5QQY) Pre-coordinated Echo Measurement 1-n U $Units = EV (cm, UCUM, “centimeter”) $Measurement = Aortic Valve Peak Systolic Flow (LN, 11706-9) $Units = EV (m/s, UCUM, “meter per second”) <<refer to spreadsheet>> Supplement TBA: Simplified Adult Echocardiography Report Page 14 NL Rel with Parent N VT Concept Name CONTAINS INCLUDE > VM Req Cond Type ition DTID (5QQZ) Post-coordinated 1-n Echo Measurement U Value Set Constraint $Measurement = …probably your vendor-specific private pre-coordinated code… $Units = …the units for this code…. N+1 120 CONTAINS INCLUDE > DTID (5204) Wall Motion Analysis 1-n U $Procedure = DT (P5-B3121, SRT, "Echocardiography for Determining Ventricular Contraction") . Content Item Descriptions Row 6 Row 11 A text string containing one or more sentences describing one or more indications, possibly with additional comments from the physician or tech. All images which are referenced in the body of the SR will be listed here. 122 124 TID 5QQY Pre-coordinated Echo Measurement This Template codes numeric echo measurements where most of the details about the nature of the measurement have been pre-coordinated in the measurement code. In contrast, see TID 5QQZ Post128 coordinated Echo Measurement. 126 130 The pre-coordinated measurement code and units are provided when this Template is included from a parent Template. Note that this template is a simple subset of TID 300. TID 5QQY Parameters 132 Parameter Name Parameter Usage $Measurement Coded term or Context Group for Concept Name of measurement $Units Units of Measurement TID 5QQY Pre-coordinated Echo Measurement Type: Extensible Order: Insignificant 134 136 NL Relation with Parent 1 2 > 3 > HAS CONCEPT MOD Value Type Concept Name VM Req Type Condition Value Set Constraint NUM $Measurement 1 M Units = $Units CODE EV (121401, DCM, “Derivation”) 1 U DCID (newcid1) Echo Derivation INCLUDE DTID (320) Image or Spatial Coordinates 1-n U $Purpose = EV (121112, DCM, Supplement TBA: Simplified Adult Echocardiography Report Page 15 NL Relation with Parent Value Type Concept Name VM Req Type Condition <<Do we want to permit SCOORD3D here? Probably since we are seeing more Echo 3D>> 4 > INCLUDE DTID (321) Waveform or Temporal Coordinates Value Set Constraint "Source of measurement”) 1-n U $Purpose = EV (121112, DCM, "Source of measurement”) 138 Content Item Descriptions 140 TID 5QQZ 142 This Template codes numeric echo measurements where most of the details about the nature of the measurement have been post-coordinated in modifiers and acquisition context. In contrast, see TID 5QQY Pre-coordinated Echo Measurement. 144 It is intended to be used for User-defined and Vendor-defined Echo Measurements. Post-coordinated Echo Measurement TID 5QQZ Post-coordinated Echo Measurement Type: Extensible Order: Insignificant 146 NL Relation with Parent 1 Value Type Concept Name VM Req Type Condition Value Set Constraint NUM $Measurement 1 M Units = $Units CODE EV (121401, DCM, “Derivation”) 1 U DCID (newcid1) Echo Derivation > INCLUDE DTID (320) Image or Spatial Coordinates 1-n U $Purpose = EV (121112, DCM, "Source of measurement”) 1c > INCLUDE DTID (321) Waveform or Temporal Coordinates 1-n U $Purpose = EV (121112, DCM, "Source of measurement”) 2 > CODE EV (G-C0E3, SRT, “Finding Site”) 1 M BCID (12236) Echo Anatomic 1a > 1b HAS CONCEPT MOD HAS CONCEPT MOD 3 Observable? Characteristic? 4 MC IFF the measurement is not unambiguously associated with a characteristic of the structure of the Finding Site in Row 2. <<Do we need codes for “Direct Measurement” or “NOS”>> Measurement 5 > HAS CONCEPT MOD CODE EV (G-C036, SRT, “Measurement Method") 1 M 6 > HAS ACQ CONTEXT CODE EV (G-0373, SRT, “Image Mode”) 1 M BCID (12227) Echocardiography Measurement Methods DCID (12224) Ultrasound Image Supplement TBA: Simplified Adult Echocardiography Report Page 16 NL Relation with Parent Value Type Concept Name VM Req Type Condition Value Set Constraint Modes 7 > HAS ACQ CONTEXT CODE EV (111031, DCM, “Image View”) 1 M BCID (12226) Echocardiography Image View 8 > HAS CONCEPT MOD CODE EV (R-4089A, SRT, “Cardiac Cycle Point”) 1 U DCID (12233) Cardiac Phase 9 > HAS CONCEPT MOD CODE EV (G-C048, SRT, “Flow Direction”) 1 MC IFF the flow direction is significant for this measurement. BCID (12221) Flow Direction 10 > HAS CONCEPT MOD CODE EV (R-40899, SRT, “Respiratory Cycle Point”) 1 MC IFF the respiratory cycle point is significant for this measurement. DCID (12234) Respiration State N > HAS CONCEPT MOD INCLUDE DTID (1210) Equivalent Meaning of Concept Name 1 U Post-coordinated Code here? Or send it as parameter to the 5QQY include at the top? 148 Echo Measurement Descriptions 150 152 Row 1 << vendor values and user values would look similar except for Dictionary>> Row 2 The finding site should reflect the anatomical location where the measurement is taken, preferably coded using SNOMED to a find detail as possible Row 3 For example, in the case of Doppler, the Characteristic is the Antegrade Flow or the Retrograde Flow at the Finding Site. In the case of a diameter measurement with a finding site of a blood vessel, generally Row 3 would not be present. Row N “Equivalent Meaning of Concept Name” allows the creating application to specify the preferred composed concept name representing the measurement and the associated post-coordination Concept Modifiers. Supplement TBA: Simplified Adult Echocardiography Report Page 17 154 Add the following CID’s to Part 16 Annex B: CID newcid1 Echo Derivation Context ID newcid1 Echo Derivation Type: Extensible Version: yyyymmdd 156 158 Coding Scheme Designator (0008,0102) 160 Code Value (0008,0100) Code Meaning (0008,0104) SRT G-A437 Maximum SRT R-404FB Minimum SRT R-00317 Mean DCM 121410 User chosen value DCM 121411 Most recent value chosen Supplement TBA: Simplified Adult Echocardiography Report Page 18 162 Add the following Definitions to Annex D DICOM Code Definitions (Coding Scheme Designator “DCM” Coding Scheme Version “01”) Code Value Code Meaning Definition … Definition Template: The <attribute> in <units> of the <structure/characteristic> measured in <mode/view> at/during <time/phase> using the <method> normalized by <index>. The measurement may have been taken using any <leftovers>. Consider removing units since that is not fundamental to the concept and is communicated in the $units anyway. Aortic Valve Annulus Diameter The diameter in cm of the Aortic Valve Annulus measured in 2D mode at End Systole. The measurement may have been taken using any view or method. Aortic Valve Flow VTI The Velocity Time Integral in cm of the Aortic Valve Flow measured in Doppler mode during Systole. The measurement may have been taken using any view or method. Aortic Valve Flow Peak Velocity The Peak Velocity in m/s of the Aortic Valve Flow measured in Doppler mode during Systole. The measurement may have been taken using any view or method. The Mean Velocity in m/s of the Aortic Valve Flow measured in Doppler mode during Systole. The measurement may have been taken using any view or method. Aortic Valve Flow Mean Velocity Aortic Valve Peak Instantaneous Gradient Aortic Valve Mean Gradient Aortic Valve Regurgitant Flow VTI The Peak Instantaneous Pressure Gradient in mmHg across the Aortic Valve measured in Doppler mode during Systole using the Simplified Bernoulli method. The Mean Pressure Gradient in mmHg across the Aortic Valve measured in Doppler mode during Systole using the Simplified Bernoulli method. The Velocity Time Integral in cm of the Aortic Valve Regurgitant Flow measured in Doppler mode during Diastole. The measurement may have been taken using any view or method. Supplement TBA: Simplified Adult Echocardiography Report Page 19 Aortic Valve Regurgitant Flow Volume by PISA The Volume in ml of the Aortic Valve Regurgitant Flow measured in Doppler mode during Diastole using the PISA method. The measurement may have been taken using any view. Aortic Valve Regurgitant Flow Jet Area to LVOT Area The Ratio in % of the Aortic Valve Regurgitant Flow Jet Area to the LVOT Area measured in Doppler mode during Diastole (?). The measurement may have been taken using any view. Aortic Valve Regurgitant Flow Effective Orifice Area The Effective Orifice Area in cm2 of the Aortic Valve Regurgitant Flow measured in Doppler mode during Diastole using the volume derived from the PISA method? The measurement may have been taken using any view. Aortic Valve Regurgitant Fraction The Ratio in % of the Aortic Valve Regurgitant Volume to the Aortic Valve Stroke Volume measured in Doppler mode. The measurement may have been taken using any view. Aortic Valve Area by Continuity VTI / BSA An indexed value in cm2/m2 representing the Area in cm2 of the Aortic Valve measured in Doppler mode using the Continuity VTI method, normalized to the Body Surface Area in m2. Pulmonary Vein Flow S-wave Peak Velocity The Peak Velocity in m/s of the Pulmonary Vein Flow measured in pulsed Doppler mode during Systole. The measurement may have been taken using any view or method and in any of the Pulmonary Veins. Pulmonary Vein Flow A-wave Duration The Duration in ms of the Pulmonary Vein Flow measured in pulsed Doppler mode during Atrial Systole. The measurement may have been taken using any view or method and in any of the Pulmonary Veins. Delta D The difference in duration in ms between the duration of the Pulmonary Vein Flow measured in pulsed Doppler mode during Atrial Systole, and the duration of the Mitral Valve Flow measured in pulsed Doppler mode during Atrial Systole. The measurement may have been taken using any view or method and in any of the Pulmonary Veins. 164 Modify Definitions in Annex D as shown: Supplement TBA: Simplified Adult Echocardiography Report Page 20 166 DICOM Code Definitions (Coding Scheme Designator “DCM” Coding Scheme Version “01”) Code Value 168 Code Meaning Definition Supplement TBA: Simplified Adult Echocardiography Report Page 21 170 172 174 Changes to NEMA Standards Publication PS 3.17-2011 Digital Imaging and Communications in Medicine (DICOM) 176 Part 17: Explanatory Information Supplement TBA: Simplified Adult Echocardiography Report Page 22 178 Add Annex ?? ANNEX ??: Mapping Guidance? Population Guidance? (Informative) 180 Use Case 0: Store and Use Core Set 182 Use Case 1: Store and Display on PACS (non-semantic number) [User configures Cart: define tool/interaction and link to new measurement = ID + Label String] 184 [User writes down detailed description of new measurement] (which then gets thrown in the shredder) User takes measurement on Cart 186 Cart stores measurement value & units in SR for the exam under the ID+Label String Cart sends SR to PACS 188 User selects an exam on PACS for display PACS opens image and renders to screen 190 [User configures PACS: define layout/overlay and link row to SR Tag = ID] PACS opens SR, finds ID, renders Label String, renders value+units 192 194 Q. Can we allow the customer to sometimes use LN code for the ID and sometimes local code? In any case it would be handy to use the same ID on several carts so they Use Case 2: Store and Insert in Report (non-semantic) Same as PACS, but PACS=>Reporting Station, Layout=>Template, Render=>Insert 196 Use Case 3: Store and Plot Graph? Trending? Database? Etc. 198 May be useful to limit Use Case 3 to single/individual patient and push Big Data/Population health into Use Case 4. 200 ** Include a description of the sub-case where the object is from some other hospital. How do you track down the paper? E.g. look in the header for the institution, call their Echo group, quote the name of the measurement and ask for documentation. 202 Q. How do we handle dumb reporting systems? Could send a two objects, a stripped down one for the reporters and a fully fledged one for the CVIS. Could assume that the CVIS will pre-process and 206 spoonfeed the reporter. Could assume that the cart will be down-configured to minimal outputs. Could imagine a flag. The cases are: how do I handle multiples of the same measurement (and know you should 208 take the last, or the mean) vs recognizing specialized (e.g. X by Method A and X by Method B to be instances of generic X). 204