To calculate absorbed doses due to neutrons in 87 organs/tissues for anthropomorphic
phantoms, irradiated in position supine (head first into the gantry) with orientations
anteroposterior (AP) and right-left (RLAT) with a 18 MV accelerator. Conversion factors
from monitor units to μGy per neutron in organs, equivalent doses in organs/tissues,
and effective doses, which permit to quantify stochastic risks, are estimated.