title: Voxel phantoms: NORMAN vs. VIP-Man, what differences are there?
abstract: The performance of two voxel phantoms (NORMAN and VIP-Man) in a whole body counter measuring internally deposited radionuclides has been compared using Monte Carlo simulations. The results from voxel phantoms has been compared with Monte Carlo simulations of BOMAB phantoms of similar size. The results show that the NORMAN phantom compared with VIP-Man gives counting efficiencies that range from 21% to 46% higher over the energy range 122 keV to 1,836 keV, a trend that is also exhibited by the comparable BOMAB phantoms. Comparing the voxel phantoms' results to those of the BOMAB phantoms shows that the former have lower counting efficiencies, as might be expected due to their more complex internal structures. Using the size parameter (wt/ht) shows that the two phantom series appear to lie on different curves. However, to confirm this, more voxel phantoms of different sizes will need to be constructed and used.
authors.affiliation: Human Monitoring Laboratory, Radiation Surveillance and Health Assessment Division, Radiation Protection Bureau, 775 Brookfield Road, PL6302D1, Ottawa, Ontario, K1A 1C1, Canada. gary_h_kramer@hc-sc.gc.ca
authors.forename: Gary H
authors.initials: GH
authors.lastname: Kramer
authors.forename: Kevin
authors.initials: K
authors.lastname: Capello
authors.forename: Erick
authors.initials: E
authors.lastname: Cardenas-Mendez
mesh_terms: D001822:Body Burden; D003198:Computer Simulation; D006801:Humans; D009010:Monte Carlo Method; D019047:Phantoms, Imaging; D011829:Radiation Dosage; D012062:Relative Biological Effectiveness; D014915:Whole-Body Counting / Q000295:instrumentation* / Q000379:methods*