Sonja Dieterich, Ph.D., M.B.A.

Co-Director, Physics Residency




Radiology Physics


Radiation Oncology

Locations and Contact

UC Davis Comprehensive Cancer Center

UC Davis Comprehensive Cancer Center
4501 X St.
Sacramento, CA 95817

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Additional Numbers



Clinical Interests

Dr. Dieterich is a medical physicist who specializes in brachytherapy, stereotactic radiosurgery and patient safety.

Research/Academic Interests

Dr. Dieterich focuses on safety engineering for special procedures with a focus on complex processes. She also has an interest in translational research in conjunction with Veterinary Radiation Oncology.


Radiation Oncology

Center/Program Affiliation

UC Davis Comprehensive Cancer Center

Undergraduate School

B.S., Physics, Technical University, Darmstadt, Hessen, Germany 1995

Other School

Ph.D., Nuclear Physics, Rutgers University, New Brunswick NJ 2002

Other School

M.S., Physics, Technical University, Darmstadt, Hessen, Germany 1998

Other School

M.B.A., Finance, UC Davis, Davis CA 2019


Radiation Medicine, Georgetown University, Washington D.C. 2002


Radiation Oncology, Georgetown University Hospital, Washington D.C. 2002-2003

Fellow of the American Association of Physicists in Medicine, 2015

FDA, "Certificate for Outstanding Contribution on Promoting Patient Safety with Medical Devices", 2010

AAPM Medical Physics Travel Award, 2007

Link to other publications:

Mechalakos JG, Dieterich S, Fong de Los Santos LE, Fontenla SC, Hanley J, Harwalkar VA, Hong LX, Huang YJ, Kim GG, Richardson SL, Sutlief SG, Yaddanapudi S, Merkel S, Parry M. Electronic charting of radiation therapy planning and treatment: Report of Task Group 262. Med Phys. 2021 Nov;48(11):e927-e968. doi:10.1002/mp.15116. Epub 2021 Aug 18. PMID:34287961.

Keall PJ, Sawant A, Berbeco RI, Booth JT, Cho B, Cerviño LI, Cirino E, Dieterich S, Fast MF, Greer PB, Munck Af Rosenschöld P, Parikh PJ, Poulsen PR, Santanam L, Sherouse GW, Shi J, Stathakis S. AAPM Task Group 264: The safe clinical implementation of MLC tracking in radiotherapy. Med Phys. 2021 May;48(5):e44-e64. doi:10.1002/mp.14625. Epub 2021 Mar 23. PMID:33260251.

Dieterich S, Green O, Booth J. SBRT targets that move with respiration. Phys Med. 2018 Dec;56:19-24. doi:10.1016/j.ejmp.2018.10.021. Epub 2018 Nov 17. PMID:30527085.

Ford E, Dieterich S. Safety Considerations in Stereotactic Body Radiation Therapy. Semin Radiat Oncol. 2017 Jul;27(3):190-196. doi:10.1016/j.semradonc.2017.02.003. Epub 2017 Feb 20. PMID:28577826.

Dieterich S, Zwingenberger A, Hansen K, Pfeiffer I, Théon A, Kent MS. INTER- AND INTRAFRACTION MOTION FOR STEREOTACTIC RADIOSURGERY IN DOGS AND CATS USING A MODIFIED BRAINLAB FRAMELESS STEREOTACTIC MASK SYSTEM. Vet Radiol Ultrasound. 2015 Sep-Oct;56(5):563-9. doi:10.1111/vru.12271. Epub 2015 Jun 25. PMID:26118737.

Dieterich S, Sherouse GW. Experimental comparison of seven commercial dosimetry diodes for measurement of stereotactic radiosurgery cone factors. Med Phys. 2011 Jul;38(7):4166-73. doi:10.1118/1.3592647. PMID:21859018.

Dieterich S, Cavedon C, Chuang CF, Cohen AB, Garrett JA, Lee CL, Lowenstein JR, d'Souza MF, Taylor DD Jr, Wu X, Yu C. Report of AAPM TG 135: quality assurance for robotic radiosurgery. Med Phys. 2011 Jun;38(6):2914-36. doi:10.1118/1.3579139. Erratum in: Med Phys. 2011 Sep;38(9):5264. PMID:21815366.

Dieterich S, Mun SK (eds). AI in Radiation Oncology, World Scientific Publishing, Boston MA. 2022.

Dieterich S, Ford E, Dan Pavord D, Jing Z (eds). Practical Radiation Oncology Physics: A Companion to Gunderson & Tepper's Clinical Radiation Oncology, Elsevier Health Sciences. 2015