Multimodality Registration for Radiation Oncology

The Multimodality Registration for Radiation Oncology (MMR-RO) specifies communications between systems creating and registering image sets specifically for Radiation Oncology.

Summary

Transmitting registration information within the Radiation Oncology domain is becoming an increasingly important to the process of external beam radiation treatments. Currently, registration can be performed on individual workstations designed for that purpose and planning systems, but the results are not readily transferable between systems, often due either to proprietary or inconsistent implementations. This profile addresses the ability to convey registered data from one system to another for further processing. This profile addresses issues dealing with multiple coordinate systems but does not specifically address the issue of repeatable fused displays. A collection of DICOM objects exists to address the problem. Their use is constrained and clarified to avoid misinterpretation and promote compatibility.

Benefits

• defines how DICOM objects for spatial registration and the images themselves are created, stored, queried, retrieved, processed and displayed
• Provides transactions required for interoperability between multi-vendor systems

Actors and Transactions defined in this profile.

Actors and Transactions defined in the Radiology Fusion profile.

Details

This Integration Profile specifies how images, RT Structure Sets, RT Doses, and associated spatial registration information can be exchanged, stored, processed and displayed. For a display workstation, it is essential that a workstation correctly identifies the corresponding image sets, matches data from single-slice and multi-slice datasets, matches coordinate systems, and performs spatial translations. The use of relevant DICOM objects (Spatial Registration) is clarified and constrained in order to avoid misinterpretation.

Image Registration Integration Profile focuses on content for image registration and does not define a registration workflow. Such workflow could be managed by using mechanisms described in the Post-Processing Workflow Integration Profile. The Image Registration Integration Profile currently only handles rigid registration. The intention is to add deformable registration as an extension to the Profile in the future.

The Image Registration Profile does not specify the use of quantification methods for the image data that is created or displayed. In particular interoperability for PET Standard Uptake Values (SUV) is considered a relevant future work item for IHE. Note that vendors may wish to prodovide SUV capability even though not required under this Profile.

Systems Affected

• Radiation Oncology PACS
• Treatment Planning Systems

Specification

Profile Status: Final Text

Documents:

IHE Radiation Oncology Technical Framework:

• Image Registration Supplement - Chapter 4 and Appendix A & B
• Radiology Image Fusion profile (FUS) - Chapter 3

Underlying Standards:

• DICOM
• DICOM-RT
• HL7

See Also

Related Profiles

• Normal Treatment Planning-Simple (NTPL-S)
• RT Treatment Workflow (TRWF)
• Image Fusion (FUS) provides some of the actors and transactions required by this profile.

Consumer Information

• The MMR-RO FAQ answers typical questions about what the Profile does.
• The MMR-RO Purchasing describes considerations when purchasing equipment to deploy this Profile.

Implementer Information

• The MMR-RO Implementation provides additional information about implementing this Profile in software.

This page is based on the Profile Template