Performance characteristics of a commercially available whole body counting phantom measured experimentally and using Monte Carlo simulations

The performance characteristics of a commercially available whole body counting phantom have been examined experimentally and using Monte Carlo simulations. The counting efficiency as a function of photon energy (126 keV to 2,754 keV) obtained using this phantom has been compared with those obtained using a real or virtual BOMAB phantom in a scanning detector and a FastScan whole body counter. The results,suggest that the commercially available whole body counting phantom is equivalent to a BOMAB phantom under certain circumstances but that under other measurement conditions it may be necessary to develop correction factors.