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MaMP and FeMP: computational mesh phantoms applied for studying the variation of WBC efficiency using a NaI(Tl)
T C Ferreira Fonseca1, R Bogaerts, A L Lebacq
1Belgian Nuclear Research Centre (SCK•CEN), Rad. Prot. Dosimetry and Calibration, Boeretang, 200 Mol 2400, Belgium.
Abstract:
In a previous study, the counting efficiency calibration was calculated for 36 computational mesh phantoms called MaMP and FeMP-Male and Female Mesh Phantoms, which span variations in height, weight and gender. They were created to be used in a sitting configuration WBC set-up using an HPGe detector. Now this work is extended to investigate the influence of body sizes and the position of the detector on the counting efficiency (CE) for a different counting geometry. This was done by creating a new set of MaMP and FeMP mesh phantoms lying on a reclining chair and by studying the variation of the counting efficiency using a NaI(Tl) detector for the WBC set-up of SCK-CEN. The deviation of the CE due to the detector's position with respect to the phantom was investigated. Correlations were also studied for CE as a function of trunk volume, waist-hips ratio (WHR) and waist-chest ratio (WCR) for different mesh phantoms.
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