Rodney D. Wiersma, Ph.D.
Research Associate Professor of Radiation Oncology
Director of Physics Research, University of Pennsylvania School of Medicine
Radiobiology and Imaging Member, Abramson Cancer Center (ACC)
ACC Strategic Planning Workforce Development Group, Abramson Cancer Center
Department: Radiation Oncology
Graduate Group Affiliations
Contact information
3620 Hamilton Walk
John Morgan Building - Room 183
Philadelphia, PA 19104
John Morgan Building - Room 183
Philadelphia, PA 19104
Office: 215-898-0270
Education:
B.S. (Physics)
University of Alberta, Canada, 1999.
M.S. (Physics)
Simon Fraser University, Canada, 2002.
PhD (Physics)
Max-Planck-Institute / University of Hanover, Germany, 2006.
Permanent linkB.S. (Physics)
University of Alberta, Canada, 1999.
M.S. (Physics)
Simon Fraser University, Canada, 2002.
PhD (Physics)
Max-Planck-Institute / University of Hanover, Germany, 2006.
Selected Publications
Koch CJ, Kim MM, Wiersma RD: Radiochemical Oxygen Depletion Depends on Substrate and Dose-Rate: Implications for FLASH Effect. Int J Radiat Oncol Biol Phys 117(1): 214-222, Sep 2023.Sakaamini, Ahmad and Van Slyke, Alexander and Partouche, Julien and Wu, Tianming and Wiersma, Rodney D: An AI-based universal phantom analysis method based on XML-SVG wireframes with novel functional object identifiers. Physics in Medicine and Biology 68(14): 10.1088, Jul 2023.
Wei Zou, Haram Kim, Eric S Diffenderfer, David J Carlson, Cameron J Koch, Ying Xiao, BoonKeng K Teo, Michele M Kim, James M Metz, Yi Fan, Amit Maity, Costas Koumenis, Theresa M Busch, Rodney Wiersma, Keith A Cengel, Lei Dong: A phenomenological model of proton FLASH oxygen depletion effects depending on tissue vasculature and oxygen supply. Frontiers in Oncology 12: 1004121, Nov 2022.
Van Slyke AL, El Khatib M, Velalopoulou A, Diffenderfer E, Shoniyozov K, Kim MM, Karagounis IV, Busch TM, Vinogradov SA, Koch CJ, Wiersma RD.: Oxygen Monitoring in Model Solutions and In Vivo in Mice During Proton Irradiation at Conventional and FLASH Dose Rates. Radiat Res 198: 181-189, Aug 2022.
Liu X, Van Slyke AL, Pearson E, Shoniyozov K, Redler G, Wiersma RD.: Improving the efficiency of small animal 3D-printed compensator IMRT with beamlet intensity total variation regularization. Med Phys 49(8): 5400-5408, Aug 2022.
El Khatib M, Van Slyke AL, Velalopoulou A, Kim MM, Shoniyozov K, Allu SR, Diffenderfer EE, Busch TM, Wiersma RD, Koch CJ, Vinogradov SA.: Ultrafast Tracking of Oxygen Dynamics During Proton FLASH. Int J Radiat Oncol Biol Phys 113: 624-634, Jul 2022.
Yin, Lingshu; Zou, Wei; Kim, Michele M.; Avery, Stephen M.; Wiersma, Rodney D.; Teo, Boon-Keng K.; Dong, Lei; Diffenderfer, Eric S: Evaluation of two-voltage and three-voltage linear methods for deriving ion recombination correction factors in proton FLASH irradiation. IEEE Transactions on Radiation and Plasma Medical Sciences 6(3): 263-270, Mar 2022.
A Sakaamini, X Liu, R Wiersma: A Portable Real-Time Image-Guided 6DoF Robotic Positioning System for Canine FLASH Trials. AAPM Annual Meeting 2022.
J Ryser, R Wiersma, S Avery, X Liu, A Kassaee: Developing a 3D-Printed Phantom for Daily Proton QA of Two Energies (poster). AAPM Annual Meeting 2022.
D Holloman, A Sakaamini, X Liu, S Yoon, T Li, R Wiersma: Dosimetric Accuracy of 6DoF Robotics for SRS Motion Management. AAPM Annual Meeting 2022.