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Updated: Mar 5, 2026

Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera
Published on: January 30, 2020
Optimization of the Compton camera for measuring prompt gamma rays in boron neutron capture therapy
Chun-Hui Gong1, Xiao-Bin Tang2, Di-Yun Shu3
1Department of Nuclear Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China; National Institute of Nuclear Physics, INFN, Section of Pavia, Italy.
Abstract:
Optimization of the Compton camera for measuring prompt gamma rays (0.478MeV) emitted during boron neutron capture therapy (BNCT) was performed with Geant4. The parameters of the Compton camera were determined as follows: 3cm thick - 10cm wide scatter detector (Silicon), 10cm thick - 10cm wide absorber detector (Germanium), and 1cm distance between the scatter and absorber detectors. For a typical brain tumor treatment, the overall detection efficiency of the optimized Compton camera was approximately 0.1425% using the Snyder's head phantom with a sphere tumor (4cm diameter and ~1cm depth).
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