Research Institute in Oncology and Hematology

Dr Boyd McCurdy

Medical Physics

Dr Boyd McCurdy
675 McDermot Ave
Winnipeg, MB R3E 0V9
Email: Dr Boyd McCurdy, PhD


Medical Physics

Award-winning research carried out at CCMB has led to the development of an algorithm that is able to predict portal dose images. The approach utilizes our detailed understanding of the underlying physics taking place in radiation transport and scatter in the patient, as well as the energy response of the detector system. This takes us a step closer to being able to verify the actual dose distribution that a patient receives during treatment. Currently he is investigating real-time algorithms to extract and analyze the differences between the predicted and measured portal dose maps.
His research into portal dosimetry with EPIDs and three-dimensional patient dose reconstruction leads naturally into adaptive radiation treatment. We are using our novel ability to estimate actual delivered dose to test various optimization strategies to adapt patient treatments as they progress through their treatment regimen. Previous work has demonstrated significant dosimetric errors (ranging up to >10% of prescription dose) will occur in a portion of the patient population. Thus, there is great opportunity to improve patient outcomes with this research.


Team Members

Publications Since 2010

PubMed Listed Publications
  1. Investigation of a real-time EPID-based patient dose monitoring safety system using site-specific control limits. Fuangrod T, Greer PB, Woodruff HC, Simpson J, Bhatia S, Zwan B, vanBeek TA, McCurdy BM , Middleton RH. Radiat Oncol. 2016 Aug 12;11(1):106. doi: 10.1186/s13014-016-0682-y.

  2. Frame average optimization of cine-mode EPID images used for routine clinical in vivo patient dose verification of VMAT deliveries. McCowan PM, McCurdy BM . Med Phys. 2016 Jan;43(1):254. doi: 10.1118/1.4938413.

  3. An in vivo dose verification method for SBRT-VMAT delivery using the EPID. McCowan PM, Van Uytven E, Van Beek T, Asuni G, McCurdy BM . Med Phys. 2015 Dec;42(12):6955-63. doi: 10.1118/1.4935201.

  4. Validation of a method for in vivo 3D dose reconstruction for IMRT and VMAT treatments using on-treatment EPID images and a model-based forward-calculation algorithm. Van Uytven E, Van Beek T, McCowan PM, Chytyk-Praznik K, Greer PB, McCurdy BM . Med Phys. 2015 Dec;42(12):6945-54. doi: 10.1118/1.4935199.

  5. First Experience With Real-Time EPID-Based Delivery Verification During IMRT and VMAT Sessions. Woodruff HC, Fuangrod T, Van Uytven E, McCurdy BM , van Beek T, Bhatia S, Greer PB. Int J Radiat Oncol Biol Phys. 2015 Nov 1;93(3):516-22. doi: 10.1016/j.ijrobp.2015.07.2271. Epub 2015 Jul 22.

  6. An investigation of gantry angle data accuracy for cine-mode EPID images acquired during arc IMRT. McCowan PM, Rickey DW, Rowshanfarzad P, Greer PB, Ansbacher W, McCurdy BM . J Appl Clin Med Phys. 2014 Jan 6;15(1):4507. doi: 10.1120/jacmp.v15i1.4507.

  7. A Monte Carlo tool for evaluating VMAT and DIMRT treatment deliveries including planar detectors. Asuni G, van Beek TA, Venkataraman S, Popescu IA, McCurdy BM . Phys Med Biol. 2013 Jun 7;58(11):3535-50. doi: 10.1088/0031-9155/58/11/3535. Epub 2013 May 2.

  8. Model-based prediction of portal dose images during patient treatment. Chytyk-Praznik K, VanUytven E, vanBeek TA, Greer PB, McCurdy BM . Med Phys. 2013 Mar;40(3):031713. doi: 10.1118/1.4792203.

  9. Automatic conformal prescription of very selective saturation bands for in vivo 1H-MRSI of the prostate. Venugopal N, McCurdy B , Hovdebo J, Al Mehairi S, Alamri A, Sandhu GS, Sivalingam S, Drachenberg D, Ryner L. NMR Biomed. 2012 Apr;25(4):643-53. doi: 10.1002/nbm.1780. Epub 2011 Dec 9.

  10. Short echo time in vivo prostate ¹H-MRSI. Venugopal N, McCurdy B , Al Mehairi S, Alamri A, Sandhu GS, Sivalingam S, Drachenberg D, Ryner L. Magn Reson Imaging. 2012 Feb;30(2):195-204. doi: 10.1016/j.mri.2011.09.020. Epub 2011 Dec 9.

  11. Investigation of the spatial resolution of an online dose verification device. Asuni G, Rickey DW, McCurdy BM . Med Phys. 2012 Feb;39(2):697-705. doi: 10.1118/1.3675972.

  12. PARETO: A novel evolutionary optimization approach to multiobjective IMRT planning. Fiege J, McCurdy B , Potrebko P, Champion H, Cull A. Med Phys. 2011 Sep;38(9):5217-29. doi: 10.1118/1.3615622.

  13. A Monte Carlo investigation of contaminant electrons due to a novel in vivo transmission detector. Asuni G, Jensen JM, McCurdy BM . Phys Med Biol. 2011 Feb 21;56(4):1207-23. doi: 10.1088/0031-9155/56/4/020. Epub 2011 Feb 1.

  14. Real time MRI prostate segmentation based on wavelet multiscale products flow tracking. Flores-Tapia D, Venugopal N, Thomas G, McCurdy B , Ryner L, Pistorius S. Conf Proc IEEE Eng Med Biol Soc. 2010;2010:5034-7. doi: 10.1109/IEMBS.2010.5627187.

Research Funding





RIOH gratefully acknowledges the generous support of



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