Dr. Rowan Thomson

Associate Professor, Medical Physics
Physics Department - Carleton University
Office: 
2466 HP
Tel: 
(613) 520 - 2600 Ext. 7540
Email: 
rthomsonatphysics [dot] carleton [dot] ca

Research Summary

Despite the widespread application of radiotherapy for cancer treatment, questions relating to the interactions of radiation with matter remain. Further, emerging treatment modalities prompt new areas of investigation. My research program involves the development and application of computational techniques and theoretical approaches to study the interactions of radiation with matter, with an emphasis on research questions relevant to radiotherapy. The approaches taken are generally theoretical and computational, often involving Monte Carlo simulations.


Over the last few years, I have been developing BrachyDose, a fast Monte Carlo simulation package for brachytherapy (radiation therapy via radioactive source implantation).  BrachyDose is currently being deployed at cancer centres for treatment planning and evaluation, in addition to being used for dosimetry studies for ocular, breast, lung, and prostate cancer treatments.


I'm interested in fundamental questions regarding the interactions of radiation with matter.  I'm investigating radiation transport and energy deposition on cellular and subcellular levels.  Future work will investigate prospective treatment modalities such as radiotherapy delivery using nanodevices.

 

Publications

2010 - present 

  • M. Lesperance, M. Martinov, and R. M. Thomson, Monte Carlo dosimetry for 103Pd, 125I, and 131Cs ocular brachytherapy with various plaque models using an eye phantom, Med. Phys. 41, 031706 (2014).
  • M. Lesperance, M. Inglis-Whalen, and R. M. Thomson, Model-based dose calculations for COMS eye plaque brachytherapy using an anatomically realistic eye phantom, Med. Phys. 41, 021717 (2014).
  • J. G. H. Sutherland, N. Miksys, K. M. Furutani, and R. M. Thomson, Metallic artifact mitigation and organ-constrained tissue assignment for Monte Carlo calculations of permanent implant lung brachytherapy, Med. Phys. 41, 011712 (2014).
  • J. G. H. Sutherland, K. M. Furutani, and R. M. Thomson, Monte Carlo calculated doses to treatment volumes and organs at risk for lung brachytherapy, Phys. Med. Biol. 58, 7061 - 7080 (2013). Institute of Physics (IOP) Featured Article: Article of high-interest across IOP content. Featured on Medical Physics Webas the PMB Editor's Choice (week of October 7, 2013)
  • J. G. H. Sutherland, K. M. Furutani, and R. M. Thomson, A Monte Carlo investigation of lung brachytherapy treatment planning, Phys. Med. Biol. 58, 4763 - 4780 (2013). Featured on Medical Physics Webas the PMB Editor's Choice (week of June 24, 2013)
  • R. M. Thomson, A. Carlsson Tedgren, and J. F. Williamson, On the biological basis for competing macroscopic dose descriptors for kilovoltage dosimetry: cellular dosimetry for brachytherapy and diagnostic radiology, Phys. Med. Biol. 58, 1123 - 1150 (2013).
  • Y. Ahuja, K. G. Kapoor, R. M. Thomson, K. M. Furutani, R. W. Shultz, S. L. Stafford, S. Dev, N. E. Abu-Yaghi, D. Reynolds, and J. S. Pulido, The effects of intraocular silicone oil placement prior to I-125 brachytherapy for uveal melanoma: a clinical case series, Eye 26, 1487-1489 (2012).
  • L. Beaulieu, A. Carlsson Tedgren, J.-F. Carrier, S. D. Davis, F. Mourtada, M. J. Rivard, R. M. Thomson, F. Verhaegen, T. A. Wareing, and J. F. Williamson, Report of the Task Group 186 on model-based dose calculation techniques in brachytherapy beyond the TG-43 formalism: Current status and recommendations for clinical implementation, Med. Phys. 39, 6208-6236 (2012).
  • S.-T. Chiu-Tsao, M. A. Astrahan, P. T. Finger, D. S. Followill, A. S. Meigooni, C. S. Melhus, F. Mourtada, M. E. Napolitano, R. Nath, M. J. Rivard, D. W. O. Rogers, and R. M. Thomson, Dosimetry of 125I and 103Pd COMS eye plaques for intraocular tumors: Report of Task Group 129 by the AAPM and ABS, Med. Phys. 39, 6161 - 6184 (2012).
  • J. G. H. Sutherland, K. M. Furutani, Y. I. Garces, and R. M. Thomson, Model-based dose calculations for 125I lung brachytherapy, Med. Phys. 39, 4365 - 4377 (2012).
  • C. L. Deufel, K. M. Furutani, R. M. Thomson, and J. A. Antolak, Mathematical solutions of the TG-43 geometry function for curved line, ring, disk, sphere, dome and annulus sources, and applications for quality assurance, Phys. Med. Biol. 56, 5429 (2011).
  • R. M. Thomson and I. Kawrakow, On the Monte Carlo simulation of electron transport in the sub-1 keV energy range, Med. Phys. 38, 4531 (2011). [Medical Physics Letter]
  • J.G.H. Sutherland, R. M. Thomson and D. W. O. Rogers, Changes in dose with segmentation of breast tissues in Monte Carlo calculations for low-energy brachytherapy, Med. Phys. 38, 4858 (2011).
  • M. J. Rivard, S. Chiu-Tsao, P. T. Finger, A. S. Meigooni, C. S. Melhus, F. Mourtada, M. Napolitano, D. W. O. Rogers, R. M. Thomson, and R. Nath, Comparison of dose calculation methods for brachytherapy of intraocular tumors, Med. Phys. 38, 306 (2011). [Article figures featured as illustrations on the cover of the January 2011 issue of Medical Physics (Vol. 38, Issue 1).]
  • R. M. Thomson, K. M. Furutani, J. S. Pulido, S. L. Stafford, and D. W. O. Rogers, Modified COMS plaques for 125I and 103Pd iris melanoma brachytherapy, International Journal of Radiation Oncology Biology Physics 78, 1261 (2010).
  • R. M. Thomson and D. W. O. Rogers, Re-evaluation of the product of and the graphite to air stopping power ratio for 60Co air kerma standards, Physics in Medicine and Biology 55, 3577 (2010). [Institute of Physics (IOP) Featured Article (Article of high-interest across IOP content)]
  • R. M. Thomson and D. W. O. Rogers, Monte Carlo dosimetry for 125I and 103Pd eye plaque brachytherapy with various seed models, Medical Physics 37, 368 (2010).