AAPM Committee Tree

Activities	To develop guidelines for reference dosimetry in MR-Guided high energy photon RadioTherapy (MRGRT) units. The task group will: Review and evaluate existing literature on calculated and experimental data sets for magnetic field-dependent beam quality conversion factors. Review and determine ‘reference setup conditions’ for measurement of beam quality and reference dose. This is necessary as in some of the units, the standard TG-51 defined reference setup conditions cannot be achieved. Review, evaluate and identify appropriate reference-grade ionization chambers and measuring instruments for reference dosimetry in the presence of a magnetic field. Review and evaluate the sources of uncertainty and determine an uncertainty budget for MRGRT reference dosimetry. Produce an AAPM Task Group report on reference dosimetry for MR-guided high energy photon radiotherapy based on findings in charges a-d in line with the current internationally accepted reference dosimetry protocols. Collaborate with the Ionization Chamber Registry Working Group (WGICR) to incorporate relevant parameters/data for MRGRT appropriate reference-grade detectors into the registry.
By-Laws:	Not Referenced.Rules: Not Referenced.
Approved Date(s):	8/3/2020 - 12/31/2023
Reviewable Draft Deadline:
Committee Keywords:	No Keywords Entered

TG351 - Clinical reference dosimetry in MR-guided radiotherapy [Status]

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Chair

Arman Sarfehnia
Task Group Chair

(dates shown below are start and end dates of position.)

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= incomplete or out of date conflict of interest statement.

VOTING Appointments

There are 8 voting members.

Paola E. Alvarez, MS 8/3/2020 - 12/31/2023 Member	Hugo Bouchard, PhD 8/3/2020 - 12/31/2023 Member
Geoffrey S. Ibbott, PhD 8/3/2020 - 12/31/2023 Member	Victor Malkov 1/1/2022 - 12/31/2023 Member
Bryan R. Muir, PhD 8/3/2020 - 12/31/2023 Task Group Vice Chair	David W. Rogers, PhD 8/3/2020 - 12/31/2023 Member
Arman Sarfehnia, PhD 8/3/2020 - 12/31/2023 Task Group Chair	Poonam Yadav, PhD 8/3/2020 - 12/31/2023 Member

NON-VOTING Appointments

There are 6 non-voting members and guests.

Maria R. Bellon, MS 8/3/2020 - 12/31/2023 Consultant (nonvoting)	Leon de Prez, PhD 8/3/2020 - 12/31/2023 Consultant (nonvoting)
James E. Dolan 8/3/2020 - 12/31/2023 Consultant (nonvoting)	William Y. Song, PhD 5/1/2023 - 12/31/2023 Guest (nonvoting)
Bram Van Asselen Ph.D. 8/3/2020 - 12/31/2023 Consultant (nonvoting)	Jochem Wolthaus 8/3/2020 - 12/31/2023 Consultant (nonvoting)

HQ Team Appointed to Committee

There are 0 staff.