ディジタル画像の画像解析CR画像とX線スペクトル

概要

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Regarding projection digital radiography, we have investigated the calculating method for X-ray energy consisting of a digital image. We were able to recognize the process of input, management, and computer display through digital values that were proportional X-ray energy in CR imaging. Therefore, we could verify the adjustment of the calculating method using the CR system. In this study, absorbed X-ray energy(D)was ealculated for imaging plates based on literature about the photon energy function of the process that the X-ray goes through a polystyene length and is absorbed onto an imaging plate. The system sensitivity(SS)was calculated using masured digital values(s)in CR imaging. Relation between(D)and(SS)is as follows: 1) The relation between the exposured condition and X-ray energy consisting of digital imaging was theoretically calculated. 2) Assumption errors of calculated values are about +13% (n=24), even if the exposured conditions (X-ray tube voltage, exposure time, distance and polystyrene length etc.)are changed. Take account of this factor, it could be theoretically changed.
公益社団法人日本放射線技術学会の論文
1995-04-01