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MPPG 24: Physics Aspects of Proton Radiotherapy (MPPG24) AAPM Members, Affiliates and Non-Member Affiliates - Login for access to additional information Activities This WG will coordinate the development of a single, multi-part Medical Physics Practice Guideline (MPPG) titled on Physics Aspects of Proton Radiotherapy. This MPPG will provide harmonized minimum practice guidelines across the key components of modern proton therapy implementation and operation, including safe and effective machine operation, accurate treatment planning system (TPS) commissioning, and consistent clinical planning strategies. By-Laws: Not Referenced.Rules: Not Referenced. Standing? This is not a standing committee. Approved Date(s): 5/4/2026 Committee Keywords: No Keywords Entered Board of Directors Professional Council Clinical Practice  [Status] SC on Practice Guidelines  [Status] MPPG 24: Physics Aspects of Proton Radiotherapy  [Status] TG474: MPPG 24 Part A: Performance Tests for Proton Pencil Beam Sca  [Status] TG475: MPPG 24 Part B: Commissioning and QA of Proton Treatment Pla  [Status] » Conflict of Interest report for MPPG24 » Status Reports for Task Groups - AC | EC | IC | PC | SC | Board Committees | All

Chair None on file.

2026 Roster

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

= complete and up-to-date
= up-to-date but expires soon
= incomplete or out of date conflict of interest statement.

VOTING Appointments

There are 4 voting members.

Xuanfeng Ding, PhD 5/3/2026 - 12/31/2028 Member	William T. Hrinivich, PhD 5/3/2026 - 12/31/2028 Chair,  Task Group No. 474: MPPG 24 Part A: Performance Tests for Proton Pencil Beam Sca (ex officio) 5/3/2026 - 12/31/2028 Member
Heng Li, PhD 5/3/2026 - 12/31/2028 Member	Mark Pankuch, PhD 5/3/2026 - 12/31/2028 Member

NON-VOTING Appointments

There are 0 non-voting members and guests.

HQ Team Appointed to Committee

There are 0 staff.

See connections to MPPG 24: Physics Aspects of Proton Radiotherapy (MPPG24)

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