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

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 require DICOM expertise from developers and users • both have same ROI mechanisms: DICOM Segmentations, contours, etc. 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 Primary use case is tumor measurement + questions/answers  • e.g., tumor volume=x cm3, necrosis=present, edge=spiculated , ….

Motivation for Harmonization Achieve interoperability between  • AIM workstations • DICOM SR workstations Store AIM content in PACS  • all clinical PACS are DICOM-based • most support storage/regurgitation of DICOM SR Make AIM content available in clinical reporting systems  • most already accept DICOM SR input • e.g., for cardiac, ultrasound, radiation dose measurements

DICOM SR provides input to clinical reporting process Structured content extracted into “merge fields” in VR report template “Evidence Document” SR Voice Human Report Recognition SR, CDA, text System DICOM Images from Modality Image from David Weiss, Aunt Minnie 2013/01/18

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

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

Combined AIM and DICOM World AIM AIM Annotations Workstation GAP - interoperability DICOM Image PACS Store, Distribute, Review DICOM Segmentation Voice Recognition Reporting System DICOM SR DICOM SR Workstation

Combined AIM and DICOM World AIM AIM Annotations GAP – storage in PACS Workstation DICOM Image PACS Store, Distribute, Review DICOM Segmentation Voice Recognition Reporting System DICOM SR DICOM SR Workstation

Combined AIM and DICOM World AIM AIM Annotations Workstation DICOM Image GAP – use in PACS Store, reporting system Distribute, Review DICOM Segmentation Voice Recognition Reporting System DICOM SR DICOM SR Workstation

Gaps Filled by SR AIM Converter AIM AIM Annotations Workstation DICOM Image PACS Store, Conversion Distribute, AIM <-> SR Review DICOM Segmentation Voice Recognition Reporting System DICOM SR DICOM SR Workstation

Harmonization – Specific Tasks 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 Compare DICOM SR TID 1500 Measurement Report  • Image Library, ROIs (contours, segmentations), measurements, qualitative (categorical) evaluations (coded questions + answers) Define mapping in new DICOM Standard Supplement  • already approved by DICOM Standards Committee Work Item 2015-12-B Implement bi-directional mapping tool  • existing Java DICOM SR toolkit + XSL-T style sheet for transformation

EXTR EXTRA A SLIDES SLIDES