Calibration of a phoswich type partial body counter by Monte Carlo simulation of low-energy photon transport.
The Forschungszentrum Karlsruhe operates a partial body counter, which is designed for the in vivo measurement of low-energy photon emitters in the human body. Recently, a numerical procedure has been developed which allows for the calculation of individual calibration factors for this partial body counter. The procedure is based on a Monte Carlo simulation of the radiation transport from the contaminated organ or tissue within the body to the detectors using the MCNP5 code. For simulation of the human body, the MEET Man dataset of the Institute of Biomedical Techniques of the University Karlsruhe has been applied. The derived calibration factors were compared with the respective values measured using some physical phantoms such as the Lawrence Livermore National Laboratory torso phantom and the bone phantoms of the New York University Medical Center and the US Transuranium and Uranium Registry.
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Forschungszentrum Karlsruhe GmbH, P.O. Box 3640, D-76021 Karlsruhe, Germany. info@idea-system.com
Heide
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D002138:Calibration; D006801:Humans; D008099:Liver / Q000528:radiation effects*; D008168:Lung / Q000528:radiation effects*; D008297:Male; D009010:Monte Carlo Method; D019047:Phantoms, Imaging; D017785:Photons; D011834:Radiation Monitoring / Q000295:instrumentation / Q000379:methods*