WG-07 (Radiotherapy) by C009v4


									WG-07 (Radiotherapy)
Secretariat                        MITA
Secretary                          Howard Clark, MITA
Chair                              David Murray, TomoTherapy Incorporated
Vice-Chair                         Bruce Curran, Rhode Island Hospital
Date of Last Update:               April 6, 2009

To develop and maintain radiotherapy information objects for the DICOM Standard, and promote their
implementation and acceptance within the industry.

WG-07 is working actively on Supplement 147 (Second Generation Radiotherapy), aiming for Frozen
Draft status mid-2010. Some of this work is required to support IHE-RO initiatives.

Short Term Goals:
The major goal of WG-07 is development of Supplement 147 (Second Generation Radiotherapy), to enable
departmental workflow and open DICOM to new technologies and techniques in RT, in particular as an
enabler for adaptive therapy. Other important ongoing goals of WG-07 are support of IHE-RO initiatives
with new standardization where necessary, and maintenance of existing radiotherapy objects.

Current Status:
Supplement 11 (RT Image, RT Structure Set, RT Dose, RT Plan) and Supplement 29 (RT Treatment
Record Objects and Media Support) are part of the DICOM 1999 standard. Supplement 102 (Ion Therapy)
is part of the DICOM 2006 standard. DICOM Supplements 74 (Utilization of Worklist in Radiotherapy
Treatment Delivery) and 96 (Unified Worklist and Procedure Step) are in Frozen Draft for trial
implementation at IHE-RO in 2009. Supplement 147 (Second Generation Radiotherapy) is well advanced,
with a goal of Frozen Draft status mid-2010 for use in one or more IHE-RO profiles.

Current Work Items:
Supplement 147 (second Generation Radiotherapy), being developed pursuant to work item 2007-06-B.

IHE-RO (IHE in Radiation Oncology) is an active initiative requiring support from DICOM for workflow
and other activities. WG7 needs to progress its work at a rate consistent with IHE-RO goals where possible.

Challenges and Opportunities:
Introduction of UPS-based workflow and adoption of upcoming second-generation radiotherapy objects
represents significant investment by manufacturers. Although IHE-RO is also promoting their uptake,
synchronization of implementations across the industry represents a challenge. The potential payoff is
however high: many existing technologies require the new objects, and workflow implementation across
the industry could lead to very significant gains in productivity.

Relationships to Other Standards:
RT objects use IEC-61217 for treatment machine descriptions and ICRU concepts for dosimetry. The
DICOM patient-based coordinate system (First amendment to IEC 61217, 62C/269) also has a well-defined
relationship to the IEC Patient coordinate system. A second amendment to address “pitch” and “roll”
coordinate systems has been published. IEC/TR 62266 (“Medical Electrical Equipment - Guidelines for
Implementation of DICOM in Radiotherapy”), and IEC 62274: “Safety of Radiotherapy Record and Verify
Systems” have also been published. WG-07 will continue to be involved in review of other IEC standards
where necessary. IHE-RO initiatives may also involve integration of DICOM objects in radiotherapy with
other standards such as HL7.

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