Office: Juravinski Cancer Centre, 4-32
Phone: (905) 387-9711 ext. 67008
My research interests centre around the clinical implementation of radiation therapy techniques such as IMRT and VMAT. Currently one student is working on refining model parameters to improve the accuracy of dose calculation for small dynamic radiation therapy fields.
Quality and Safety in Intensity Modulated Radiotherapy (IMRT) Planning and Delivery.
IMRT is a radiotherapy technique that is widely used to either escalate dose to target structures or to limit dose to organs at risk. My research interests stem from our clinical efforts to maintain a high level of quality and safety while accommodating the increased complexity associated with IMRT planning and delivery. Specific projects have included the use of the electronic portal imager for patient specific quality assurance; dosimetry of IMRT fields; and development of IMRT techniques.
Andrew Lu and Orest Ostapiak, An Evaluation of Two Approaches to Skin Bolus Design for Patients Receiving Radiotherapy for Head & Neck Cancers, Journal of Medical Imaging and Radiation Sciences, 36(3),S37-S42, September 2015. DOI: http://dx.doi.org/10.1016/j.jmir.2014.08.001.
Contouring Nomenclature Working Group, Contouring Nomenclature Recommendation Report, A project developed by the Head and Neck Community of Practice of the Radiation Treatment Program of Cancer Care Ontario for circulation to Regional Cancer Programs. https://www.cancercare.on.ca/common/pages/UserFile.aspx?fileId=300038. February 2014.
Shahin Fattahi, Orest Ostapiak, “An opposed matched field IMRT technique for prostate cancer patients with bilateral hip prosthesis”, Journal of Applied Clinical Medical Physics, 13(1), (2012).
Rao F.H. Khan, Orest Z. Ostapiak, Joe J. Szabo, “Modeling electronic portal imager response for pre-treatment verification of IMRT fields”, Journal of Applied Clinical Medical Physics. 9(4), 2008.
- MedRadSci 2W03: Physics and Instrumentation for Radiation Therapy