Caractérisation et optimisation d'un détecteur à scintillation à 2 points

Authors: Duguay-Drouin, Patricia
Advisor: Beaulieu, LucBeddar, Sam
Abstract: In high dose rate brachytherapy, the dose is delivered locally to the tumour and due to the inverse square law therefore the source is surrounded by high dose gradient. Thus a small uncertainty in the source position can cause a significant dose discrepancy. This project uses scintillation dosimetry for HDR brachytherapy dose measurement applications. The purpose of this work is to develop a detector able to measure the dose at 2 separate points, and optimize for such HDR brachytherapy applications. This project is divided into two parts: the spectral characterization of a 2-points detector, and the characterization of the photodetector system. First, the 2-points detector’s optical chain is characterized using a spectrometer. This allows to determine the optimal scintillating components and to then build optimal 2-points detectors. Second, the photodetector system is also characterized using the detectors built in the first section of the project. The final goal is to use the multi-points detector for precise and accurate dose measurements for both measuring points during HDR brachytherapy treatments.
Document Type: Mémoire de maîtrise
Issue Date: 2016
Open Access Date: 24 April 2018
Grantor: Université Laval
Collection:Thèses et mémoires

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