*University of Washington Medical Center, Seattle, WA

†Cleveland Clinic

¶University Hospitals Seidman Cancer Center/Case Western Reserve University School of Medicine, Cleveland, OH

‡American Radium Society, Mount Royal, NJ

§New York-Presbyterian Hospital, New York, NY

∥Providence Health, Eureka

#Long Beach VA Medical Center, Long Beach

**Keck School of Medicine, Los Angeles, CA

††Department of Radiation Oncology, Stritch School of Medicine, Cardinal Bernardin Cancer Center, Loyola University Chicago, Chicago

‡‡Department of Radiation Oncology, Maguire Center, Maywood, IL

§§Rakuten-Medical, South Florida Proton Therapy Institute, Delray Beach, FL

Kuni Foundation, research funding, Hutchinson Center as Lead Academic Participating Site; UG1 CA 233328; Japanese Society for Radiation Oncology, travel expenses; American College of Radiology, Alternate councilor on behalf of American Radium Society and Chair of CARROS Nominating Committee; Radiosurgery Society, Member of Board of Directors, and National Medical Director of the Distinction in Practice in Stereotactic Radiotherapy Program. Honorarium from Physician Education Resources (PER) to give a CME lecture on postmastectomy breast cancer annually. Leadership committees for the American Radium Society (ARS), including the annual scientific program and the AUC Steering Committee. Meeting honoraria and travel reimbursement from the American College of Radiology, Cooperative of American Physicians, and Aptitude Health. Board of Chancellors for the American College of Radiology and the Board of Trustees for the Radiation Oncology Institute. Carl Zeiss, honoraria, and travel expenses for DSMB service. ACR Radiation Oncology Commission.

Rakuten-Medical Inc., medical director; South Florida Proton Therapy Institute, locum. Volunteer relationships: American College of Radiology, Chair of Practice Parameters, Radiation Oncology, and Chair of CARROS Quality and Safety Committee; ASTRO, Chair of Safety Scientific Committee.

*This practice parameter has been posted on the American College of Radiology website (acr.org) as of October 2023

Correspondence: Simon Lo, MD, University of Washington Medical Center, 1959 NE Pacific St, Seattle, WA 98195. E-mail: [email protected].