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

被引：8
作者：
Gutierrez, A. [1 ]
Baker, C. [2 ]
Boston, H. [3 ]
Chung, S. [1 ]
Judson, D. S. [3 ]
Kacperek, A. [4 ]
Le Crom, B. [3 ]
Moss, R. [1 ]
Royle, G. [1 ]
Speller, R. [1 ]
Boston, A. J. [3 ]
机构：
[1] UCL, Dept Med Phys & Biomed Engn, London WC1E 6BT, England
[2] Royal Berkshire NHS Fdn Trust, Med Phys Dept, Reading RG1 5AN, Berks, England
[3] Univ Liverpool, Dept Phys, Liverpool L69 3BX, Merseyside, England
[4] Clatterbridge Canc Ctr NHS Fdn Trust, Natl Eye Proton Therapy Ctr, Wirral CH63 4JY, Merseyside, England
来源：
JOURNAL OF INSTRUMENTATION | 2018年 / 13卷
关键词：
Compton imaging; Gamma detectors (scintillators; CZT; HPG; HgI etc); Instrumentation for hadron therapy; RADIOTHERAPY; SIMULATION; MODELS; SYSTEM;
D O I：
10.1088/1748-0221/13/01/C01036
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
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.
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页数：10
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