Physical phantoms are used at whole body counting laboratories to calibrate detector systems for in-vivo monitoring of radionuclides internally deposited in the body. Such phantoms should realistically represent the human body in the selected measurement geometry. In the past, the BOMAB(1) (Bottle Manikin Absorption) phantom was used for calibration purposes at the laboratory for Anthropogammametry of SCK•CEN. However, it was considered inadequate because of leakage risk and the volume of radioactive waste produced at each calibration. As a consequence of this fact a new phantom was developed. The Emma phantom is made of Epramid blocks (cylinders, cuboids and elliptical cylinders) in which sealed line sources can be introduced. The phantom is modular so that different body geometries can be made. This paper presents the phantom with its sources. The phantom was used to calibrate the SCK•CEN whole body counting (WBC) setup. Efficiency calibration curves were obtained for different body geometries. The results of the calibration are discussed.
|Journal||Radiation protection dosimetry|
|State||Published - Feb 2011|
|Event||European Conference on Individual Monitoring of Ionising Radiation - Greek Atomic Energy Commision, Athens|
Duration: 8 Mar 2010 → 12 Mar 2010