Rod Wiersma
Professor, Radiation Oncology, University of California Los Angeles
rwiersma@mednet.ucla.edu
Publications
- Sakaamini A, Van Slyke A, Partouche J, Wu T, Wiersma RD. An AI-based universal phantom analysis method based on XML-SVG wireframes with novel functional object identifiers.. Physics in medicine and biology, 2023.
- Koch CJ, Kim MM, Wiersma RD. Radiation-Chemical Oxygen Depletion Depends on Chemical Environment and Dose Rate: Implications for the FLASH Effect.. International journal of radiation oncology, biology, physics, 2023.
- Zou W, Kim H, Diffenderfer ES, Carlson DJ, Koch CJ, Xiao Y, Teo BK, Kim MM, Metz JM, Fan Y, Maity A, Koumenis C, Busch TM, Wiersma R, Cengel KA, Dong L. A phenomenological model of proton FLASH oxygen depletion effects depending on tissue vasculature and oxygen supply.. Frontiers in oncology, 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.. Radiation research, 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.. Medical physics, 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.. International journal of radiation oncology, biology, physics, 2022.
- Zou W, Diffenderfer ES, Ota K, Boisseau P, Kim MM, Cai Y, Avery SM, Carlson DJ, Wiersma RD, Lin A, Koumenis C, Cengel KA, Metz JM, Dong L, Teo BK. Characterization of a high-resolution 2D transmission ion chamber for independent validation of proton pencil beam scanning of conventional and FLASH dose delivery.. Medical physics, 2021.
- Redler G, Pearson E, Liu X, Gertsenshteyn I, Epel B, Pelizzari C, Aydogan B, Weichselbaum R, Halpern HJ, Wiersma RD. Small Animal IMRT Using 3D-Printed Compensators.. International journal of radiation oncology, biology, physics, 2020.
- Zou W, Diffenderfer ES, Cengel KA, Kim MM, Avery S, Konzer J, Cai Y, Boisseu P, Ota K, Yin L, Wiersma R, Carlson DJ, Fan Y, Busch TM, Koumenis C, Lin A, Metz JM, Teo BK, Dong L. Current delivery limitations of proton PBS for FLASH.. Radiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology, 2020.
- Ogunmolu O, Liu X, Gans N, Wiersma RD. Mechanism and Model of a Soft Robot for Head Stabilization in Cancer Radiation Therapy.. IEEE International Conference on Robotics and Automation : ICRA : [proceedings]. IEEE International Conference on Robotics and Automation, 2020.
- Wiersma RD, Liu X. A conceptual study on real-time adaptive radiation therapy optimization through ultra-fast beamlet control.. Biomedical physics & engineering express, 2019.
- Liu X, Wiersma RD. Optimization based trajectory planning for real-time 6DoF robotic patient motion compensation systems.. PloS one, 2019.
- Grelewicz Z, Belcher AH, Wiersma RD. Use of a laser-guided collimation system to perform direct kilovoltage x-ray spectra measurements on a linear accelerator onboard imager.. Medical physics, 2018.
- Belcher AH, Liu X, Chmura S, Yenice K, Wiersma RD. Towards frameless maskless SRS through real-time 6DoF robotic motion compensation.. Physics in medicine and biology, 2017.
- Quigley BP, Smith CD, Cheng SH, Souris JS, Pelizzari CA, Chen CT, Lo LW, Reft CS, Wiersma RD, La Riviere PJ. Sensitivity evaluation and selective plane imaging geometry for x-ray-induced luminescence imaging.. Medical physics, 2017.
- Liu X, Pelizzari C, Belcher AH, Grelewicz Z, Wiersma RD. Use of proximal operator graph solver for radiation therapy inverse treatment planning.. Medical physics, 2017.
- Belcher AH, Liu X, Grelewicz Z, Wiersma RD. Spatial and rotational quality assurance of 6DOF patient tracking systems.. Medical physics, 2016.
- Wiersma RD, McCabe BP, Belcher AH, Jensen PJ, Smith B, Aydogan B. Technical Note: High temporal resolution characterization of gating response time.. Medical physics, 2016.
- Liu X, Belcher AH, Grelewicz Z, Wiersma RD. Robotic real-time translational and rotational head motion correction during frameless stereotactic radiosurgery.. Medical physics, 2015.
- Belcher AH, Liu X, Grelewicz Z, Pearson E, Wiersma RD. Development of a 6DOF robotic motion phantom for radiation therapy.. Medical physics, 2014.
- Grelewicz Z, Wiersma RD. Combined MV + kV inverse treatment planning for optimal kV dose incorporation in IGRT.. Physics in medicine and biology, 2014.
- Wiersma RD, Tomarken SL, Grelewicz Z, Belcher AH, Kang H. Spatial and temporal performance of 3D optical surface imaging for real-time head position tracking.. Medical physics, 2013.
- Kang HJ, Grelewicz Z, Wiersma RD. Development of an automated region of interest selection method for 3D surface monitoring of head motion.. Medical physics, 2012.
- Belcher AH, Wiersma RD. SU-E-J-157: Simulation and Design of a Real-Time 6D Head Motion Compensation Platform Based on a Stewart Platform Approach.. Medical physics, 2012.
- Wiersma R, Tomarken S, Grelewicz Z, Kang H. SU-E-T-409: A Comparison of 3D Optical Surface and IR Marker Tracking for Head Motion Compensated Frameless SRS.. Medical physics, 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.. Medical physics, 2012.
- Li J, Wiersma RD, Stepaniak CJ, Farrey KJ, Al-Hallaq HA. Improvements in dose accuracy delivered with static-MLC IMRT on an integrated linear accelerator control system.. Medical physics, 2012.
- Liu W, Wiersma RD, Xing L. Optimized hybrid megavoltage-kilovoltage imaging protocol for volumetric prostate arc therapy.. International journal of radiation oncology, biology, physics, 2010.
- Wiersma RD, Wen Z, Sadinski M, Farrey K, Yenice KM. Development of a frameless stereotactic radiosurgery system based on real-time 6D position monitoring and adaptive head motion compensation.. Physics in medicine and biology, 2009.
- Mao W, Hsu A, Riaz N, Lee L, Wiersma R, Luxton G, King C, Xing L, Solberg T. Image-guided radiotherapy in near real time with intensity-modulated radiotherapy megavoltage treatment beam imaging.. International journal of radiation oncology, biology, physics, 2009.
- Riaz N, Shanker P, Wiersma R, Gudmundsson O, Mao W, Widrow B, Xing L. Predicting respiratory tumor motion with multi-dimensional adaptive filters and support vector regression.. Physics in medicine and biology, 2009.
- Wiersma RD, Riaz N, Dieterich S, Suh Y, Xing L. Use of MV and kV imager correlation for maintaining continuous real-time 3D internal marker tracking during beam interruptions.. Physics in medicine and biology, 2008.
- Liu W, Wiersma RD, Mao W, Luxton G, Xing L. Real-time 3D internal marker tracking during arc radiotherapy by the use of combined MV-kV imaging.. Physics in medicine and biology, 2008.
- Mao W, Riaz N, Lee L, Wiersma R, Xing L. A fiducial detection algorithm for real-time image guided IMRT based on simultaneous MV and kV imaging.. Medical physics, 2008.
- Mao W, Wiersma RD, Xing L. Fast internal marker tracking algorithm for onboard MV and kV imaging systems.. Medical physics, 2008.
- Wiersma RD, Mao W, Xing L. Combined kV and MV imaging for real-time tracking of implanted fiducial markers.. Medical physics, 2008.
- Wiersma RD, Xing L. Examination of geometric and dosimetric accuracies of gated step-and-shoot intensity modulated radiation therapy.. Medical physics, 2007.