Measurement of the scattered neutrons using the shadow cone methodology in a neutron calibration bunker.

In this work, the contribution of scattered neutrons, in a neutron calibration bunker, was determined using the shadow cone technique. The measurements of the ambient dose equivalent rate in the presence and absence of the shadow cone were used to calculate the contribution ratio of scattered neutron, and to perform the needed correction for the scattered neutrons. The scattered neutron correction was performed according the recommendation of the ISO/DIS8529-2, and the results agreed to the inverse-square law.

Implementation of a microdosimetric model for radioimmunotherapeutic alpha emitters.

A microdosimetric model for alpha-particle-emitting radiolabeled antibodies, based on an analytic method, was developed to be used for in vitro studies. The model took into consideration cell radii distributions or distributions of activity bound to cells, and calculated the single- and multihit distributions of specific energy within the target. The mean absorbed dose could then be derived from the specific energy spectra.

Implementing dosimetry in GATE: dose-point kernel validation with GEANT4 4.8.1.

GATE is a recent Monte Carlo code, based on GEANT4, and used in nuclear medicine mainly for imaging and detector design. Our goal was to implement dosimetry within GATE (i.e.