Biography
Main research interests:
Dosimetry of ionizing radiation, brachytherapy, development of new in-vivo dosimetry methods and detectors, image guided radiotherapy, Monte Carlo dose calculations, radiobiology.
Dose calculations for electron beams present a serious technical difficulty. Until recently, approximate dose calculation algorithms have been implemented in commercial treatment planning systems. Approximations cause various levels of discrepancies between calculated and measured dose distributions. I designed special phantoms, carried on the experiments and explained the physical reasons for the discrepancies found between the calculated and measured dose distributions. These phantoms have become a common standard for testing of electron dose calculations. I collaborated on the OMEGA project (funded by NIH) with scientists from the National Research Council of Canada and University of Wisconsin, USA on development of a Monte Carlo based treatment planning system for electron beams. I was the first to clinically implement the first commercial Monte Carlo based treatment planning system for electron beams. I was involved, in collaboration with the NRC scientists, in development of a new technique for using the GafChromic film for dosimetry. I have been also involved in development of new dosimetry methods and devices. I have successfully collaborated with industry (Thomson – Nielsen, presently Best Medical Canada) on development of new MOSFET detectors. Recently, we have developed a 4D dosimetry system, RADPOS, which allows for simultaneous measurement in real time of dose and spatial position manually or automatically, in user-defined time intervals.
My publication list can be accessed on my Google Scholar page.