Calculations are presented of the effective doses
per unit neutron fluence according to the ICRP publications 60 and 103.
Monte Carlo N-Particle (MCNPX) code was used for six geometrical
conditions of irradiation (Anterior-Posterior, Posterior-Anterior,
Left-Lateral, Right-Lateral, Rotation and Isotropic) on Oak Ridge
National Laboratory (ORNL) modified mathematical adult phantoms
for monoenergetic neutrons from 10-9 MeV to 20 MeV. The conversion
coefficients were compared with the results of an analytical phantom
(Medical Internal Radiation Dose (MIRD-5)) and some voxel model
(ICRP/ICRU Reference Voxel Phantom (ICRP/ICRU RVP), HANAKO, TARO
and Visible Human Project (VIPMAN)). From these comparisons, one can
conclude that large discrepancies between data sets appear when
wR and different sizes of the phantoms have been used for calculations.
Furthermore, the differences in applied Monte Carlo codes or simulated
body models could make some discrepancies less than 15%.