Transactions of the Atomic Energy Society of Japan
Online ISSN : 2186-2931
Print ISSN : 1347-2879
ISSN-L : 1347-2879
Reproducibility of Thermal Neutron Flux Distribution on Patient's Brain Surface with a Realistic Phantom
Kazuyoshi YAMAMOTOHiroaki KUMADATetsuya YAMAMOTOAkira MATSUMURA
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2004 Volume 3 Issue 2 Pages 193-199

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Abstract

To investigate the reproducibility of experimental approach for dose evaluation using a realistic phantom that faithfully reproduced the shape of a head, we considered the manufacture of a patient's realistic phantom and the reappearance of actual medical irradiation conditions. We selected the rapid prototyping technique to produce the realistic phantom from the Computed Tomography (CT) imaging. This phantom was irradiated under the same clinical irradiation condition of this patient, and the thermal neutron distribution on the brain surface was measured in detail. Several subjects on material and data conversion in the production of realistic phantom were mentioned. As a result of reproducing medical irradiation using the realistic phantom, the maximum thermal neutron flux became a value about 22% lower than the surface of the actual brain. lf the problems pointed out in this paper are solved, it may also be expected that it would become possible to check computational dosimetry system.

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