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A Glimpse at the emerging Enhanced XA/XRF Object (DICOM Supplement 83)

A Glimpse at the emerging Enhanced XA/XRF Object (DICOM Supplement 83). Heinz Blendinger (Chair DICOM WG-02) , Rainer Thieme Siemens Medical Solutions. Presented by Bas Revet, Philips Medical Systems. Presentation outline. The emerging XA/XRF Standard Difference to other Enhanced IODs

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A Glimpse at the emerging Enhanced XA/XRF Object (DICOM Supplement 83)

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  1. A Glimpse at the emerging Enhanced XA/XRF Object (DICOM Supplement 83) Heinz Blendinger (Chair DICOM WG-02), Rainer Thieme Siemens Medical Solutions Presented by Bas Revet, Philips Medical Systems

  2. Presentation outline • The emerging XA/XRF Standard • Difference to other Enhanced IODs • Clinical Benefit of Enhanced XA • Call for Participation

  3. The add-ons of Supplement 83(Rev 11) • NewFunctional groups (not complete) • Projection Pixel Calibration Macro • Table Position Macro • X-Ray Collimator Macro • Reversed Modality LUT Macro • X-Ray Field of View Macro • Frame Pixel Shift Macro • Multi-frame Presentation Module • Enhanced XA/XRF Image Module Attributes • X-Ray Detector / X-Ray Image Intensifier Modules • XA/XRF Mask Module ALL these improve Functionality & Interoperability

  4. New functionality: an example • Dimension Module in enhanced XA images. • Rotational Angiography examination can include frame “position” relative to the cardiac cycle as structural information. • Dimensions can be used to group multi-frame image frames taken at identical positions of a stepping table device.

  5. ECG-gated Cardiac Application

  6. New attributes • Simple Filter Factor • DSA Window Values (Contrast/Brightness) • Dedicated Reversed Modality DeLog LUT • Dedicated Sequence to Reference other plane for Biplane • Acquisition Context attributes

  7. Multi-Frame Presentation Module Edge Enhancement XA Object: private encoding Reason: Hard to “standardize” Algorithms Approximation XA enhanced: Attribute for “applied percentage” Not the same, but “closer”

  8. Dedicated Calibration Module • Attributes to describe iso-centric geometry • Include Table plane in geometric context • Object plane relative to table

  9. Internal Calibration for Quantitative Assessments D = # Px *  Px * SOD / SID SOD = (ISO - (TH-TO) / cos°Rot) *cos°Ang °Rot SID °Ang TH Object Plane SOD TO => Practical solution based on user experience

  10. Supplement 83 Roadmap 2002 2003 2004 2005 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 WG - 02 writes the draft WG - 06 WG - 02 WG - 02 WG - 06 Public Re - activation of of the supplement review updates updates includes the comm the WG - 02. « Enhanced XA ». s the the the supplement e nts Identify list of draft supplem supplem in the requirements of ent ent standard the new XA Supplement Supplement Supplement Supplement issued for Draft In letter In final text public ballot comments = Meeting of the WG - 02 (green indicates the meetings already hold) = Meeting of the WG - 06 (green indicates the meetings already hold)

  11. Further work • Differentiation on “processed” or “original” contents needed? • Super SOP Class and SOP Classes for particular use • Allowed / blocked applications • “Cut-line” between shared and non-shared contents • Further new attributes to support new applications or procedures.

  12. Summary • The New DICOM enhanced XA/XRF Objects: • will enhance interoperability • will increase cross system functionality • will create platform for new applications • Success requires more clinical input • Use Cases • Requirements for new applications and • Procedures

  13. Further Information / Contacts Please contact WG-02 chairman Heinz.Blendinger@siemens.com Supplement 83 Draft can be found at : http://dclunie.com/dicom-status/status.html • Next meetings: • March 4th and 5th, 2004 at NEMA • May 4th and 5th, 2004 at SFR, Paris • End of August, 2004 in Munich (ESC)

  14. Thank you for your attention

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