Back to Index
Arthur J. Olch, PhD
Professor of Clinical Radiation Oncology
Radiation Oncology
CHLA 4650 W. Sunset Blvd. Off Campus Los Angeles
+1 323 361 5406


Arthur J. Olch is Professor of Radiation Oncology and Clinical Pediatrics at the Keck School of Medicine at the University of Southern California in Los Angeles, 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 and written the book on pediatric radiotherapy treatment planning.


American Association of Physicists in Medicine: Fellow of the AAPM, 2011


Wong K, Cheng J, Bowlin K, Olch A. Adaptation of vacuum-assisted mouthpiece head immobilization system for precision infant brain radiation therapy. Pract Radiat Oncol. 2016 Nov - Dec; 6(6):425-428. View in: PubMed

Wong K, Opimo AB, Olch AJ, All S, Waxer JF, Clark D, Cheng J, Chlebik A, Erdreich-Epstein A, Krieger MD, Tamrazi B, Dhall G, Finlay JL, Chang EL. Re-irradiation of Recurrent Pineal Germ Cell Tumors with Radiosurgery: Report of Two Cases and Review of Literature. Cureus. 2016; 8(4):e585. View in: PubMed

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. View in: PubMed

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. View in: PubMed

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. View in: PubMed

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. View in: PubMed

Antony R, Wong KE, Patel M, Olch AJ, McComb G, Krieger M, Gilles F, Sposto R, Erdreich-Epstein A, Dhall G, Gardner S, Finlay JL. A retrospective analysis of recurrent intracranial ependymoma. Pediatr Blood Cancer. 2014 Jul; 61(7):1195-201. View in: PubMed

Venkatramani R, Kamath S, Wong K, Olch AJ, Malvar J, Sposto R, Goodarzian F, Freyer DR, Keens TG, Mascarenhas L. Pulmonary outcomes in patients with Hodgkin lymphoma treated with involved field radiation. Pediatr Blood Cancer. 2014 Jul; 61(7):1277-81. View in: PubMed

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. View in: PubMed

Fontenot JD, Alkhatib H, Garrett JA, Jensen AR, McCullough SP, Olch AJ, Parker BC, Yang CC, Fairobent LA. AAPM Medical Physics Practice Guideline 2. a: Commissioning and quality assurance of X-ray-based image-guided radiotherapy systems. J Appl Clin Med Phys. 2014; 15(1):4528. View in: PubMed

Venkatramani R, Kamath S, Wong K, Olch AJ, Malvar J, Sposto R, Goodarzian F, Freyer DR, Keens TG, Mascarenhas L. Correlation of clinical and dosimetric factors with adverse pulmonary outcomes in children after lung irradiation. Int J Radiat Oncol Biol Phys. 2013 Aug 1; 86(5):942-8. View in: PubMed

Venkatramani R, Olch AJ, Mascarenhas L, Yoon S, Suterwala B, Mehta B, Wong K. Correlation of long-term pulmonary injury with radiation dose distribution in childhood cancer survivors. Pract Radiat Oncol. 2012 Jul-Sep; 2(3):237-40. View in: PubMed

Arkader A, Phillips AL, Olch A, Wong K. A case of spontaneous hip dislocation that occurred during radiation therapy. J Pediatr Orthop B. 2012 Mar; 21(2):170-3. View in: PubMed

Olch AJ. Evaluation of the accuracy of 3DVH software estimates of dose to virtual ion chamber and film in composite IMRT QA. Med Phys. 2012 Jan; 39(1):81. View in: PubMed

Andrade J, Ge S, Symbatyan G, Rosol MS, Olch AJ, Crooks GM. Effects of sublethal irradiation on patterns of engraftment after murine bone marrow transplantation. Biol Blood Marrow Transplant. 2011 May; 17(5):608-19. View in: PubMed

Konijnenberg MW, Olch A. Pediatric dosimetry for intrapleural lung injections of (32)P chromic phosphate. Phys Med Biol. 2010 Oct 7; 55(19):5735-51. View in: PubMed

Olch AJ, Whitaker ML. Validation of a treatment plan-based calibration method for 2D detectors used for treatment delivery quality assurance. Med Phys. 2010 Aug; 37(8):4485-94. View in: PubMed

Khatua S, Dhall G, O'Neil S, Jubran R, Villablanca JG, Marachelian A, Nastia A, Lavey R, Olch AJ, Gonzalez I, Gilles F, Nelson M, Panigrahy A, McComb G, Krieger M, Fan J, Sposto R, Finlay JL. Treatment of primary CNS germinomatous germ cell tumors with chemotherapy prior to reduced dose whole ventricular and local boost irradiation. Pediatr Blood Cancer. 2010 Jul 15; 55(1):42-6. View in: PubMed

Lavey RS, Olch AJ. Optimal treatment for intracranial germinoma: can we lower, radiation dose without chemotherapy? In regard to Yen S-H et al. (Int J Radiat Oncol Biol Phys Epub October 27, 2009). Int J Radiat Oncol Biol Phys. 2010 Jun 1; 77(2):638-9; author reply 639. View in: PubMed

Olch A, Lavey R. Re: Intensity-modulated radiation therapy dose prescription, recording, and delivery: patterns of variability among institutions and treatment planning systems. J Natl Cancer Inst. 2008 Sep 3; 100(17):1263; author reply 1265-7. View in: PubMed

Pai S, Das IJ, Dempsey JF, Lam KL, Losasso TJ, Olch AJ, Palta JR, Reinstein LE, Ritt D, Wilcox EE. TG-69: radiographic film for megavoltage beam dosimetry. Med Phys. 2007 Jun; 34(6):2228-58. View in: PubMed

Olch AJ, Geurts M, Thomadsen B, Famiglietti R, Chang EL. Portal imaging practice patterns of children's oncology group institutions: Dosimetric assessment and recommendations for minimizing unnecessary exposure. Int J Radiat Oncol Biol Phys. 2007 Feb 1; 67(2):594-600. View in: PubMed

Olch AJ. Evaluation of a computed radiography system for megavoltage photon beam dosimetry. Med Phys. 2005 Sep; 32(9):2987-99. View in: PubMed

Olch AJ, Followill D, Thomadsen B, Wichman B, Rosemark P, Hunt M. In regard to Urie et al. : current calibration treatment, and treatment planning techniques among institutions participating in the Children's Oncology Group. IJROBP 2003;55:245-260. Int J Radiat Oncol Biol Phys. 2003 Jul 15; 56(4):1209-10. View in: PubMed

Olch AJ, Lavey RS. Reproducibility and treatment planning advantages of a carbon fiber relocatable head fixation system. Radiother Oncol. 2002 Dec; 65(3):165-8. View in: PubMed

Olch AJ. Dosimetric accuracy of the ITP inverse treatment planning system. Med Phys. 2002 Nov; 29(11):2484-8. View in: PubMed

Olch AJ. Dosimetric performance of an enhanced dose range radiographic film for intensity-modulated radiation therapy quality assurance. Med Phys. 2002 Sep; 29(9):2159-68. View in: PubMed

Olch AJ, Fallen R, Conrad J, Lavey RS. Potential therapeutic misadministration due to inappropriate electron beam field shaping. J Appl Clin Med Phys. 2000; 1(3):95-9. View in: PubMed

Nath R, Anderson LL, Meli JA, Olch AJ, Stitt JA, Williamson JF. Code of practice for brachytherapy physics: report of the AAPM Radiation Therapy Committee Task Group No. 56. American Association of Physicists in Medicine. Med Phys. 1997 Oct; 24(10):1557-98. View in: PubMed

Olch AJ, Kagan AR, Wollin M, Bellotti J. Optimization of arc angles in rotational therapy. Med Dosim. 1990; 15(3):141-6. View in: PubMed

Powered bySC CTSI