OMPI: Martin Martinov and Claudiu Cojocaru

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Thursday, April 21, 2016

Time: 3:30-5:00 pm. Refreshments start at 3:15 pm.

Location: Centre Foustanellas Auditorium, Second Floor, The University of Ottawa Heart Institute, 40 Ruskin Street.

Webcast possibility is being explored. Will update in the next announcement.

Student speaker

Title: Applications of EGSnrc Monte Carlo simulations on subcellular length scales

Speaker: Martin Martinov, PhD student at Carleton University

Supervisor: Professor Rowan Thomson

Abstract: Increasingly, studies are using Monte Carlo (MC) simulations to investigate the effects of radiation on cellular and subcellular length scales. These studies aim to improve our understanding of microdosimetry and biological effects for existing treatments, as well as to contribute to the development of novel treatment techniques such as the use of gold nanoparticles as radiosensitizers.  Due to the challenges and uncertainties of traditional MC simulations at subcellular scales, there is considerable variation in the use of simulation parameters, MC codes and modelling approaches. This work investigates MC simulations on subcellular length scales in a variety of contexts, working towards the development of a more robust, comprehensive, and efficient framework for microscopic simulations."

Member speaker

Title: Water calorimetry as a primary standard for absorbed dose to water

Speaker: Claudiu Cojocaru, PhD, National Research Council Canada

Abstract: In order to investigate the stability of a water calorimetry system as a primary standard for absorbed dose to water, measurements were performed in Co-60 and high energy linac photon beams over a span of several years.  Over this period, four sealed and three unsealed water vessels saturated with various gases were used to measure absorbed dose to water. These experiments showed that the water calorimeter system is stable for both the sealed and unsealed water vessels.