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KMID : 0364920090340030107
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Journal of Radiation Protection and Research
2009 Volume.34 No. 3 p.107 ~ p.114
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Image Quality of a Rotating Compton Camera Evaluated by Using 4-D Monte Carlo Simulation Technique
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Seo Hee
Lee Jae-Sung
Lee Ju-Hahn
Lee Chun-Sik
Kim Chan-Hyeong
Park Sung-Ho
Lee Se-Hyung
Park Jin-Hyung
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Abstract
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A Compton camera, which is based on Compton kinematics, is a very promising gamma-ray imaging device in that it could overcome the limitations of the conventional gamma-ray imaging devices. In the present study, the image quality of a rotating Compton camera was evaluated by using 4-D Monte Carlo simulation technique and the applicability to nuclear industrial applications was examined. It was found that Compton images were significantly improved when the Compton camera rotates around a gamma-ray source. It was also found that the 3-D imaging capability of a Compton camera could enable us to accurately determine the 3-D location of radioactive contamination in a concrete wall for decommissioning purpose of nuclear facilities. The 4-D Monte Carlo simulation technique, which was applied to the Compton camera fields for the first time, could be also used to model the time-dependent geometry for various applications.
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KEYWORD
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Compton Camera, Monte Carlo Simulation, 4-D, Geant4, Nuclear Decommissioning
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