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Progress towards a semiconductor Compton camera for prompt gamma imaging during proton beam therapy for range and dose verification

Gutierrez, A; Baker, C; Boston, H; Chung, S; Judson, DS; Kacperek, A; Le Crom, C; ... Boston, AJ; + view all (2018) Progress towards a semiconductor Compton camera for prompt gamma imaging during proton beam therapy for range and dose verification. Journal of Instrumentation , 13 , Article C01036. 10.1088/1748-0221/13/01/C01036. Green open access

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Abstract

The main objective of this work is to test a new semiconductor Compton camera for prompt gamma imaging. Our device is composed of three active layers: a Si(Li) detector as a scatterer and two high purity Germanium detectors as absorbers of high-energy gamma rays. We performed Monte Carlo simulations using the Geant4 toolkit to characterise the expected gamma field during proton beam therapy and have made experimental measurements of the gamma spectrum with a 60 MeV passive scattering beam irradiating a phantom. In this proceeding, we describe the status of the Compton camera and present the first preliminary measurements with radioactive sources and their corresponding reconstructed images.

Type: Article
Title: Progress towards a semiconductor Compton camera for prompt gamma imaging during proton beam therapy for range and dose verification
Open access status: An open access version is available from UCL Discovery
DOI: 10.1088/1748-0221/13/01/C01036
Publisher version: http://dx.doi.org/10.1088/1748-0221/13/01/C01036
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10042149
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