Arthur Olch, PhD, FAAPM

Physicist; Hematology, Oncology and Blood and Marrow Transplantation
Attending Physician
Professor of Clinical Pediatrics, Keck School of Medicine of USC

Arthur J. Olch is Professor of Radiation Oncology and Clinical Pediatrics at the Keck School of Medicine at the University of Southern California. He is also Chief of Physics for the Children’s Hospital of Los Angeles Radiation Oncology Program, one of only a few radiotherapy centers in the US that treat exclusively children. Dr. Olch received his BS degree in Engineering and his PhD in Medical Physics from the University of California, Los Angeles. He is a Fellow of the American Association of Physics in Medicine (AAPM). Dr. Olch has served as the Chair of the Physics Subcommittee of the Children’s Oncology Group Radiation Oncology Committee and of the AAPM Subcommittee on Quality Assurance and Outcome Improvement as well as serving as chair or member of various AAPM Task Groups. He has been a radiation therapy physicist for over 30 years and has authored or co-authored 50 journal articles and book chapters. Dr. Olch also wrote, Pediatric Radiotherapy Planning and Treatment, which is the leading textbook on planning for pediatric radiotherapy treatments.

Clinical Interests

Intensity Modulated Radiation Therapy Outcomes Research Immobilization devices Dosimtery


Graduate School

University of California, Los Angeles, Medical Physics (PhD)



American Board of Medical Physics

Professional Memberships



Fellow of the American Association of Physicists in Medicine


Kry SF, Olch A, Mohan R. Comment on "Monte Carlo evaluations of the absorbed dose and quality dependence of Al2O3 in radiotherapy photon beams" [Med. Phys. 36(10), 4421-4424 (2009)]. Med Phys. 2015 May; 42(5):2648.

Kotecha R, Venkatramani R, Jubran RF, Arkader A, Olch AJ, Wong K. Clinical outcomes of radiation therapy in the management of langerhans cell histiocytosis. Am J Clin Oncol. 2014 Dec; 37(6):592-6.

Zhuang AH, Olch AJ. Validation of OSLD and a treatment planning system for surface dose determination in IMRT treatments. Med Phys. 2014 Aug; 41(8):081720.

Olch AJ, Gerig L, Li H, Mihaylov I, Morgan A. Dosimetric effects caused by couch tops and immobilization devices: Report of AAPM Task Group 176. Med Phys. 2014 Jun; 41(6):061501.

De A, Kamath S, Wong K, Olch AJ, Malvar J, Sposto R, Mascarenhas L, Keens TG, Venkatramani R. Correlation of pulmonary function abnormalities with dose volume histograms in children treated with lung irradiation. Pediatr Pulmonol. 2015 Jun; 50(6):596-603.


Radiation late effects, dosimetry, immobilization devices