A new position recording system for the partial-body counter at KIT.
The position of detectors used for partial-body counters relative to a measured person has considerable influence on the counting efficiency of low-energy photon emitters. To minimise reading errors and enhance reproducibility of position data, an electronic position recording system was installed in the partial-body counter chamber at KIT. Phoswich detectors have been equipped with electronic sensors to determine the position and axes of the detectors. Additionally, a laser measurement system determines the position of arbitrary landmarks, e.g. point sources, anatomical features of phantoms and test persons. A network interface enables the reading of the position data on any connected computer. The system was successfully used to validate Monte Carlo simulations of partial-body counting scenarios for the numerical determination of counting efficiencies.
Institute of Radiation Research, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany. lars.hegenbart@kit.edu
Lars
L
Hegenbart
Bastian
B
Breustedt
D000465:Algorithms; D002138:Calibration; D004867:Equipment Design; D006801:Humans; D007834:Lasers; D008422:Materials Testing; D015233:Models, Statistical; D009010:Monte Carlo Method; D019047:Phantoms, Imaging; D011835:Radiation Protection / Q000295:instrumentation; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods; D015203:Reproducibility of Results; D012588:Scintillation Counting / Q000295:instrumentation