Roy M. K. Ma, MD FRCPC

Clinical Professor
Active Staff – Radiation Oncologist
British Columbia Cancer Agency (BCCA) – Vancouver Centre*

Director of Gastrointestinal (GI) Radiation Oncology, (BCCA) – Vancouver Centre*

City: Vancouver
Hospital Authority: Provincial Health Services

Address: BCCA-VCC
600 West 10th Avenue
Vancouver, BC V5Z 4E6

Phone: 604.877.6000   Fax: 604.877.0505


Major Clinical Focus – My clinical interests are in Neuro-Oncology and GI oncology, particularly in the application of precision radiotherapy techniques in these tumor sites. Thus a major portion of my clinical practice includes Proton Therapy for ocular tumors, Stereotactic Radiosurgery (SRS) and Stereotactic Radiotherapy (SRT) brain tumors, and more recently Stereotactic Body Radiotherapy (SBRT) for liver tumors.

• Doctor of Medicine, University of British Columbia, Canada, 1989
• Bachelor of Science, University of British Columbia, Canada 1985

• Canadian Cancer Society MacEachem Fellow, Harvard University Cyclotron Lab, Boston, Massachusetts, United States, 1995
• Canadian Cancer Society MacEachem Fellow, Loma Linda University Medical Center, California, United States, 1994
• Fellow of The Royal College of Physicians of Canada, Royal College of Physicians & Surgeons of Canada, Canada, 1994
• Chief Resident (Radiation Oncology), B.C. Cancer Agency, Vancouver British Columbia, Canada, 1993-1994
• Resident (Radiation Oncology), B.C. Cancer Agency, Vancouver British Columbia, Canada, 1990-1993

Biographic Summary ( Background, Academic Interests and Activities, Clinical Activities )
• My clinical interests are in the field of precision radiotherapy including Proton Therapy, Stereotactic Radiosurgery and Stereotactic Radiotherapy. I have been a member of the Provincial Stereotactic Operations Working Group since its inception in 1997. I am the past Chair of the Provincial Neuro-Oncology Tumour Group of the BC Cancer Agency from 1998 to 2004 and am the current Director of GI Radiation Oncology.
• I have been heavily involved in post-graduate education in Radiation Oncology and have been both a runner-up and the recipient of the resident’s teaching award. I am a member of the Residency Training Committee since 2002, and served as the Program Director of the Residency Training Program from 2007 to 2011.
• I have a special interest in educating the general public in the Chinese community about cancer. As such, I have voluntarily attended various community forums, radio and TV broadcasts over the past years.


1. Tran E, Ma R, Paton K, Pickles T. Outcomes of Proton Radiation Therapy for Peripapillary Choroidal Melanoma at The British Columbia Cancer Agency. Int J Radiat Oncol Biol Phys., 2012; 83(5):1425-31.
2. Rootman D, Rootman J, Gregory S, Feldman K, Ma R. Stereotactic radiotherapy for cavernous venous malformations (hemangioma) of the orbit. Ophthal Plast Reconstr Surg. 2012 Mar;28(2):96-102.
3. Thomas C, Di Maio S, Ma R, Vollans E, Chu C, Clark B, Lee R, McKenzie M, Martin M, Toyota B. Hearing Preservation Following Stereotactic Fractionated Radiotherapy for Acoustic Neuromas; prognostic implications of cochlear dose. J Neurosurg, 2007;107: 917-926.
4. Chung H, Ma R, Clark B, Robar J, McKenzie M. Audiologic and treatment outcomes following LINAC-based stereotactic irradiation for acoustic neuroma. Int J Radiat Oncol Biol Phys., 2004; 59(4):1116-1121.
5. Tankel K., Hay J, Ma R, Larsson S, MacFarline J.K. Short Course Pre-operative Radiotherapy for Operable Rectal Carcinoma. A retrospective analysis of the initial experience of the British Columbia Cancer Agency. The American Journal of Surgery, 2002; 183:509-511.
6. Ma R, Phang T. Results of curative surgery and postoperative chemoradiation for rectal adenocarcinomas in British Columbia, 1985 to 1994. Canadian Journal of Surgery, 2001; 44(5): 377-382.
7. Ma R. Stereotactic radiotherapy for optic nerve and meningeal lesions. In: Orbital Disease, Present Status and Future Challenges. Ed: Rootman. Taylor & Francis. Boca Raton 2005
8. Pickles T, Ma R. Proton Therapy: Past Experience and Future Application. In: Current Radiation Oncology, Volume 3. Ed: Tobias & Thomas. Arnold. London 1997

* The British Columbia Cancer Agency (BCCA)-Vancouver Centre (VC) is the largest academic cancer centre for the BCCA, located in downtown Vancouver and treating about one third of the radiation oncology cancer patients in the Province of BC. Over 4360 cancer patients are seen each year in the radiation oncology department. There are 20 Radiation Oncology (RO) physician faculty with full disease site specialization and clinical programs of excellence, 2 General Practice (Internist) Oncology Physicians, 3 Clinical Fellows and 10 RO residents. The BCCA-Vancouver Centre also has 17 physicists and a graduate training program in physics, 15 nurses, >60 radiation therapists clerks, secretaries and many others within radiation oncology. General capabilities include 9 Linacs (including Truebeam), 1 cobalt, VMAT (first developed in the BCCA-VC), IMRT, SBRT, IGRT, HDR and LDR brachytherapy suites, and Protons (at the TRIUMF centre). The Vancouver Centre radiation oncology department conducts all levels of research (basic, translational, clinical, population), and is the main educational institution in BC for the training of graduate (residents) and undergraduate (medical) students. The interdisciplinary Radiation Oncology team is part of the even larger multidisciplinary and provincial teams.