IHERO UseCase 2013 Query Retrieve In Radiation Oncology

1. Proposed Workitem: Query/Retrieve In Radiation Oncology

Proposal Editor: Christof Schadt
Editor: Christof Schadt
Date: N/A (Wiki keeps history)
Version: N/A (Wiki keeps history)
Domain: Radiation Oncology

2. The Problem

The amount of data available throughout a work-flow in radiation oncology has been increasing over the years. One reason is the constantly increasing capability of imaging modalities of creating image information with smaller slice thicknesses, resulting in a higher number of slices. Another reason is the increasing number and variety of image series and related information.

Usage of Registration objects to combine multiple image data sets (as defined by the MMRO profile), and data created upon multiple image data sets results in a complex structure of references among a large set of information objects.

The actual problem then arises when searching for some specific information within this data or retrieving it in a timely manner.

3. Key Use Case

See also an older proposal, which dates back to 2006.

Retrieve images, structures, plan from CTSim/Archive for planning
Retrieve secondary images from an archive or a modality to assist in planning
Retrieve plan and doses from other planning systems for comparison
Retrieve treatment records and verification images for offline review
Retrieve plan and dose for dose accumulation
Retrieve a complete set of patient treatment planning data for clinical trials submission

Technical Considerations

speed of retrieval (multiple associations, asynchronous associations)
multiple sources of data
identification on patient/series/object level
relational dependencies of data (through registrations)

4. Standards and Systems

DICOM Standard Query/Retrieve model as defined in PS3.4

5. Discussion