Gießen 2024 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 72: Poster
HK 72.8: Poster
Donnerstag, 14. März 2024, 17:15–18:45, HBR 14: Foyer
Development of a Compton camera prototype using monolithic and pixelated scintillators with segmented SiPM readout for medical imaging — •Sultan Alzahrani1,2, Beatrice Villata1, and Peter Thirolf1 — 1Department of Medical Physics, Ludwig-Maximilians-Universitat München, Germany — 2Department of Physics and Astronomy, KSU, Riyadh, Saudi Arabia
The growing interest in particle beam therapy for cancer treatment is driven by the ability to provide high-precision dose delivery. However, this benefit demands a high accuracy of the determination of the well-localized dose deposition (Bragg peak), which has to be located within the tumour volume. Different methods of beam range monitoring are assessed globally. The Compton camera is a promising γ-ray detector that operates in a wide energy range. Compton scattering kinematics, utilized to determine the energy and origin of γ-rays from the irradiated volume without the need for a mechanical collimator, is the basis of Compton imaging. The objective of our project is to develop and implement an imaging system that uses a Compton camera, consisting of monolithic (CeBr3) and pixelated (GAGG or CeBr3) scintillators as scatterer and absorber, read out by segmented SiPM arrays. In order to facilitate the system to be used for clinical application, the signal readout and processing complexity could be reduced by a scalable DAQ electronics. The status of this project including different detector and readout configurations of a Compton camera prototype, associated imaging algorithms, improvement scopes, and their prospective features will be presented.
Keywords: Compton camera; scintillators; SiPM; γ-rays; medical imaging