Harmonizing DICOM SR and AIM Overlapping use cases DICOM SR is - - PowerPoint PPT Presentation

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Oct 04, 2022 421 likes •568 views

Harmonizing DICOM SR and AIM Overlapping use cases DICOM SR is a mechanism for encoding annotations that works with clinical PACS (encoded and stored like DICOM images) AIM is a mechanism for encoding annotations that does not

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Harmonizing DICOM SR and AIM

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Overlapping use cases

DICOM SR is a mechanism for encoding annotations that works with clinical

PACS (encoded and stored like DICOM images)

AIM is a mechanism for encoding annotations that does not require DICOM

expertise from developers and users

both have same ROI mechanisms: DICOM Segmentations, contours, etc.

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Goal is to develop a bi-directional mapping for such use cases

allow DICOM SR based systems to send to AIM workstations
allow AIM workstations to send to DICOM PACS, voice recognition system

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Primary use case is tumor measurement + questions/answers

e.g., tumor volume=x cm3, necrosis=present, edge=spiculated, ….

SLIDE 2

Motivation for Harmonization

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Achieve interoperability between

AIM workstations
DICOM SR workstations

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Store AIM content in PACS

all clinical PACS are DICOM-based
most support storage/regurgitation of DICOM SR

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Make AIM content available in clinical reporting systems

most already accept DICOM SR input
e.g., for cardiac, ultrasound, radiation dose measurements

SLIDE 3

DICOM SR provides input to clinical reporting process

“Evidence Document” SR Human Report SR, CDA, text

DICOM Images from Modality

Voice Recognition System

Image from David Weiss, Aunt Minnie 2013/01/18

Structured content extracted into “merge fields” in VR report template

SLIDE 4

AIM World

AIM Workstation DICOM Segmentation PACS Store, Distribute, Review AIM Annotations DICOM Image

SLIDE 5

DICOM World

DICOM Segmentation DICOM SR PACS Store, Distribute, Review DICOM SR Workstation DICOM Image Voice Recognition Reporting System

SLIDE 6

Combined AIM and DICOM World

AIM Workstation DICOM Segmentation DICOM SR PACS Store, Distribute, Review DICOM SR Workstation AIM Annotations DICOM Image Voice Recognition Reporting System

GAP - interoperability

SLIDE 7

Combined AIM and DICOM World

AIM Workstation DICOM Segmentation DICOM SR PACS Store, Distribute, Review DICOM SR Workstation AIM Annotations DICOM Image Voice Recognition Reporting System

GAP – storage in PACS

SLIDE 8

Combined AIM and DICOM World

AIM Workstation DICOM Segmentation DICOM SR PACS Store, Distribute, Review DICOM SR Workstation AIM Annotations DICOM Image Voice Recognition Reporting System

GAP – use in reporting system

SLIDE 9

Gaps Filled by SR AIM Converter

AIM Workstation DICOM Segmentation DICOM SR PACS Store, Distribute, Review DICOM SR Workstation AIM Annotations

Conversion AIM <-> SR

DICOM Image Voice Recognition Reporting System

SLIDE 10

Harmonization – Specific Tasks

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Identify most common use cases

as used by projects (e.g., TCGA-*)
as implemented by tools (e.g., ePAD, NWU ClearCanvas, ATB)
examine model and objects produced for projects/by tools

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Compare DICOM SR TID 1500 Measurement Report

Image Library, ROIs (contours, segmentations), measurements, qualitative

(categorical) evaluations (coded questions + answers)

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Define mapping in new DICOM Standard Supplement

already approved by DICOM Standards Committee Work Item 2015-12-B

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Implement bi-directional mapping tool

existing Java DICOM SR toolkit + XSL-T style sheet for transformation

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EXTR EXTRA A SLIDES SLIDES

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