National Extensions on PDI for Germany - Brief Proposal

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1. Proposed Profile: National Extensions on PDI for Germany

  • Proposal Editor: Christoph Dickmann
  • Date: N/A (Wiki keeps history)
  • Version: N/A (Wiki keeps history)
  • Domain: Radiology and other imaging domains

2. The Problem

The Portable Data for Imaging profile (PDI) defines a general way to exchange media (CD-ROM) with DICOM data, optionally web-viewable or other data.
The German Roentgen Association (DRG) has initiated and sponsored work on how to use PDI so that German regulations are fulfilled. The result of this work is a non-IHE specification that partly extends, partly changes PDI requirements and recommendations.
Alignment work between the German authors and the IHE Radiology Technical Committee has already resulted in a number of Change Proposals to PDI.
However, several issues could not be resolved by Change Proposals. These are considered candidates for a German Extension of the IHE RAD Technical Framework's PDI profile. Main differences between the DRG specification and the PDI profile:

  • a virus-checked CD must not be appended
  • no single DICOM media application profile required (but multiple allowed)
  • directory for web contents can differ from PDI-required directory
  • DICOM viewer reliability and use is stricter than in PDI.


3. Key Use Case

The main use case is related to reliable and high-quality digital image transfer by CD-ROM (based on German Röntgenverordnung). In addition, there were numerous practical problems in the field where Radiologists were not able to view image data on CDs they were given by patients or colleagues.

In order to make digital image sharing as reliable as film-based image sharing, a number of requirements and recommendations are stated especially for Germany.

4. Standards & Systems

IHE RAD PDI.


5. Discussion

The file Media:IHE-RAD-TF-GER-PDI_20070828.doc contains the detailed proposal and open issues to be discussed, including all differences between the DRG specification and PDI. Solving these issues should be tackled together with IHE-D and the German authors.

The Brief Proposal "PDI large data sets - Brief Proposal" covers one issue from the German PDI extension feature list: saving voluminous data on CD using the DVD compression mechanism. This requires collaboration with DICOM.

It should be checked if there are results from this work that can be generalized, i.e. are relevant to the PDI profile (international scope).

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