Sonja Dieterich, Ph.D., MBA

Sonja Dieterich, Ph.D., MBA



Medical Physics

Radiation Oncology


Radiation Oncology


  • Professor
  • Medical Physicist


To see if Sonja Dieterich is accepting new patients, or for assistance finding a UC Davis doctor, please call 800-2-UCDAVIS (800-282-3284).

Clinical Interests

I specialize in the medical physics of complex treatments and small-field dosimetry, with vast experience in frameless stereotactic radiosurgery and stereotactic body radiotherapy and an interest in image-guided high-dose-rate (HDR) brachytherapy.My clinical research interests include improving image- guidance in HDR brachytherapy and in-vivo dosimetry to validate new dose calculation algorithms. As a medical physicist, I collaborate closely with physicians to determine the best use of advanced technology for each individual situation and contribute my technical expertise to support our patients' fight against cancer.


Radiation Oncology

Center/Program Affiliation

UC Davis Comprehensive Cancer Center


Ph.D., Rutgers, The State University of New Jersey, Piscataway NJ 2002

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

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


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

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

Board Certifications

American Board of Radiology, Therapeutic Radiological Physics, 2006

Professional Memberships

American Association of Physicists in Medicine (AAPM)

American Physical Society (APS)

American Society of Therapeutic Radiation Oncology (ASTRO)

Honors and Awards

Fellow of the American Association of Physicists in Medicine, 2015

Select Recent Publications

Dieterich S, Green O, Booth J, Dieterich S. SBRT targets that move with respiration. Physica Medica?: PM?: an International Journal Devoted to the Applications of Physics to Medicine and Biology?: Official Journal of the Italian Association of Biomedical Physics (AIFB). 2018;56:19–24.

Ford E, Dieterich, S, Ford E. Safety Considerations in Stereotactic Body Radiation Therapy. Seminars in Radiation Oncology. 2017;27(3):190–196. 

Hsieh E, Hansen K, Kent M, Saini S, Dieterich S. Can a commercially available EPID dosimetry system detect small daily patient setup errors for cranial IMRT/SRS? 2017 e283–e290. 

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.

Mayadev J, Dieterich S, Harse R, Lentz S, Mathai M, Boddu S, Kern M, Courquin J, Stern RL. A failure modes and effects analysis study for gynecologic high-dose-rate brachytherapy. Brachytherapy. 2015 Nov-Dec;14(6):866-75.

Wang L, Kielar KN, Mok E, Hsu A, Dieterich S, Xing L. An end-to-end examination of geometric accuracy of IGRT using a new digital accelerator equipped with onboard imaging system. Phys Med Biol. 2012;57, 757-769.

Malinowski KT, McAvoy TJ, George R, Dieterich S, D'Souza WD. Mitigating errors in external respiratory surrogate-based models of tumor position. Int J Radiat Oncol Biol Phys. 2012 Apr 1;82(5):e709-16.

Gardner EA, Sumanaweera TS, Blanck O, Iwamura AK, Steel JP, Dieterich S, Maguire P. In vivo dose measurement using TLDs and MOSFET dosimeters for cardiac radiosurgery. J Appl Clin Med Phys. 2012 May 10;13(3):3745.

Schlaefer A, Dieterich S. Feasibility of case-based beam generation for robotic radiosurgery. Artif Intell Med. 2011;52(2):67-75.

Burmeister J, Chen Z, Chetty IJ, Dieterich S,Doemer A, Dominello MM, Howell RM, McDermott P, Nalichowski A, Prisciandaro J, Ritter T, Smith C, Schreiber E, Shafman T, Sutlief S, Xiao Y. The American Society for Radiation Oncology’s 2015 Core Physics Curriculum for Radiation Oncology Residents. Intern J of Rad Onc. Biology, Physics. 2016