Color gamma camera system for radiation monitoring

Zhiping Mu; Jingkang Deng; Yanfeng Wang

doi:10.1117/12.407597

21 November 2000 Color gamma camera system for radiation monitoring

Zhiping Mu, Jingkang Deng, Yanfeng Wang

Proceedings Volume 4141, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics II; (2000) https://doi.org/10.1117/12.407597
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

Radiation monitoring systems are desired in many places where radioactive materials are utilized. In this paper, a color gamma camera system developed in Tsinghua University (P.C. China) is reported. The system consist of a compact X - (gamma) ray detector system, a single hole collimator, the scanning mechanism and computer system. The MLEM method is implemented for image reconstruction, which enables one to generate images of high resolution with relatively big aperture. With the associated software, several scanning modes, which work with different speeds and resolutions, are provided and can be selected in the operations. In addition, the system can detect radioactive sources emitting rays of different energies and display them with color images. Experiments were made using Am-241 (59.5 KeV) and Na-22 (511 KeV) to test the performance of the system. The results are presented which show that the resolution of this system can be as high as 1.5 degrees. Furthermore, simulations using Matlab were made to examine the capability of imaging point sources with a small number of counts and imaging distributed sources. Promising results were obtained and are reported. Discussions about camera design and further improvements are given at the end.

Citation Download Citation

Zhiping Mu, Jingkang Deng, and Yanfeng Wang "Color gamma camera system for radiation monitoring", Proc. SPIE 4141, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics II, (21 November 2000); https://doi.org/10.1117/12.407597

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