Assistant Professor of Radiation and Cellular Oncology
Dr. Wiersma's research is primarily focused on real-time image guided methods for improving the clinical outcome of radiation therapy with an emphasis on real-time organ motion tracking using on board LINAC MV and kV radiation imaging systems, molecular imaging and organ motion tracking techniques using iron oxided nano-particles, and electronic portal imaging devices for tracking. He has served as principal investigator on two extramural grants, the most recent being a project entitled "Dynamically adaptive kV aperture for lowdose realtime prostate motion tracking during radiation therapy by combined MV-kV imaging" funded by the Cancer Research Foundation (CRF).
In addition to these activities, Dr. Wiersma has published several articles, book chapters, and abstracts. He has also been invited to give oral presentations throughout the country, including the American Association for Physicists in Medicine annual meeting and Stanford University. While maintaining a high-level of research productivity, Dr. Wiersma also teaches and mentors students at the graduate and undergraduate levels.
- Wiersma RD, Tomarken S.L., Grelewicz Z, Belcher A., Kang H, Feasibility of using Real-Time 3D Optical Surface Tracking for Robotic Motion Compensated Frameless SRS. Submitted to Phys. Med. Biol. (2012)
- H.J. Kang, Z. Grelewicz, and R.D. Wiersma, Development of an automated region of interest selection method for 3D surface monitoring of head motion, Med. Phys. 39, 3270 (2012)
- Grelewicz Z, Kang H, Wiersma RD. An EPID based method for performing high accuracy calibration between an optical external marker tracking device and the LINAC reference frame, Med Phys., 39(5), 2771–2779 (2012)
- Ji Li, Rodney D. Wiersma, Christopher J. Stepaniak, Karl J. Farrey, and Hania A. Al-Hallaq, Improvements in dose accuracy delivered with static-MLC IMRT on an integrated linear accelerator control system, Med Phys., 39 (5), 2456-62 (2012)
- Liu Wu, Rodney D. Wiersma, Lei Xing, Optimized Hybrid MV-kV Imaging Protocol for Volumetric Prostate Arc Therapy, International Journal of Radiation Oncology * Biology * Physics, 78 (2), 595-604, (2010)