Martin Martinov, Peter Raaphorst

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Date: 
Thursday, December 19, 2013
Time: 
3:30 pm
Location: 
Foustanellas Auditorium (room H-2367), second floor, The University of Ottawa Heart Institute. 40 Ruskin st, Ottawa, On K1Y 4W7

1. "Recent developments with BrachyDose"
Martin Martinov - Carleton University

Abstract:  This presentation will review the work done for and with BrachyDose in CLRP recently.  It will look over a Graphical User Interface (GUI) made for the upcoming distribution of BrachyDose.  The GUI has the same functionality as most of the other EGSnrc user-code GUIs wih some additional features.  It will give an overview of a graphical reimplimentation of StatDose with additional functionality as well.  Then it will cover an analysis of several different eye plaque models used in ocular melanoma treatments, building on the work done creating an eye model in CLRP this previous year.

2. "The Physics and Quality Control of Clinical Bone Mineral Density Programs"
Peter Raaphorst - Carleton University

Abstract: A serious problem in the aging process is the loss of bone minerals resulting in osteoporosis. This causes the bones to become weak a brittle and susceptible to fracture and breaking. Spinal and hip fractures can lead to severe debilitation and to death in the elderly. The rate of bone mineral loss varies between genders and amongst individuals. Early detection of bone mineral loss can lead to intervention and the delay of osteoporosis. Differential x-ray absorptiometry (DXA) can be used to detect bone mineral loss. This is a quantitative x-ray procedure that requires a high level of precision. In order to achieve this precision a quality control process has been developed to allow detection of bone mineral loss in the spine and the hip with precision as low as 0.5%.  The physics and quality control of DXA will be described and examples of serious errors that were incurred when a QC program is not followed will be presented.