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Homayon Parsai, PhD

Assistant Professor

Locations of Practice

Education and Training

College: Concordia University, Montreal, Canada

Graduate School: University of British Columbia, Vancouver, Canada


Selected Publications

  • ACR–ASTRO Practice Parameter for Image-guided Radiation Therapy (IGRT) JY Luh, KV Albuquerque, C Cheng, RP Ermoian, N Nabavizadeh, H Parsai, JC Roeske, SE Weiss, RB Wynn, Y Yi, SA Rosenghal, A Hartford American Journal of Clinical Oncology 43 (7), 459-468 (2020)
  • A Javascript library that uses Windows Script Host (WSH) to analyze prostate motion data fragmented across a multitude of Excel files by the Calypso 4D Localization System. FS Vali, A Hsi, P Cho, H Parsai, E Garver, R Garza AMIA… Annual Symposium proceedings. AMIA Symposium, 1162-1163 (2008)
  • Evaluation of interfraction and intrafraction prostate motion during the treatment of prostate cancer using the Calypso 4D localization system. RA Hsi, F Vali, H Parsai, E Garver, B Madsen, H Pham, G Song, …International Journal of Radiation Oncology Biology Physics 72 (1), S300-301 (2008)
  • Improved Prostate Dosimetric Outcomes After Permanent Prostate Interstitial Brachytherapy Using a Real-Time Dosimetry vs. Pre-Plan Technique in a Consecutive Series of Patients. RA Hsi, T Okura, E Garver, H Parsai, P Cho, D Jacobs, J Corman. International Journal of Radiation Oncology Biology Physics 69 (3), S365-S366 (2007)
  • Real Time vs. Pre-Planned Prostate Brachytherapy: A Single InstiK Badiozamani, B Madsen, S Warren, H Pham, G Song, J Corman, H Parsai. International Journal of Radiation Oncology Biology Physics 66 (3), S392-3 (2006)
  • Hypofractionated Stereotactic Radiation Therapy for Pulmonary Nodules Using a Unique Frameless Stereotactic Treatment Technique. RA Hsi, BL Madsen, HT Pham, G Song, KR Badiozamani, H Parsai. International Journal of Radiation Oncology Biology Physics 66 (3), S671 (2006)
  • Use of intensity modulation for missing tissue compensation of pediatric spinal fields. MH Phillips, PS Cho, H Parsai, JG Douglas. Journal of applied clinical medical physics 4 (4), 274-281 (2003)
  • Numerical instability and conditioning in IMRT optimization. P Cho, J Meyer, D Yee, M Phillips, H Parsai. Medical Physics 30 (6) (2003)
  • Random and systematic beam modulator errors in dynamic intensity modulated radiotherapy. H Parsai, PS Cho, MH Phillips, RS Giansiracusa, D Axen. Physics in Medicine & Biology 48 (9), 1109 (2003)
  • Verification of dynamic intensity‐modulated beam deliveries in canine subjects. H Parsai, MH Phillips, PS Cho, H Kippenes, P Gavin, D Axen. Medical Physics 28 (11), 2198-2208 (2003)
  • Dynamic and omni wedge implementation on an Elekta SL linac. MH Phillips, H Parsai, PS Cho. Medical Physics 27 (7), 1623-1634 (2000)

Research Interests

  • Electron beam transport
  • Brachytherapy