半価層の測定に用いるアルミニウムの研究 : 診療用X線

概要

論文の詳細を見る
Effective energy of X-ray is generally calculated by use of half value layer and adsorpting coefficient of the absorbing material. Half value layer of an absorbing material is obtained by measuring its thickness at whith the dose of incident X-ray is reduced by 50%. At this study, aluminium of two kind were used as the absorbing mateial for the measurement of half value layer. The quality of one material widely used for experiments was know, while that of the other material was not known. When the latter material is to be used as absorbinng material, it would be useful if any reference value is given and a calibration method is established. Here, reference aluminium and calibration methods were experimentally investigated. As a thermoluminescence dosimeter was used at this study, calibration method to obtain the valuse for an ionization chamber was also investigated. As the result, we could develop new simple and practical system for the measurement of half value layer of an absorbing material whose aluminium is not known.
日本医療機器学会の論文
1993-01-01