デジタル乳房画像を用いた乳腺線量の計測

概要

論文の詳細を見る
The control of exposure dose in mammography and its evaluation are important factors in quality control. Tanaka et al. measured the glandular composition of each pixel by using a digital mammogram, and suggested the method to estimate an average glandular dose from the mean measurement value (average glandular composition) by using a formula of Sobol. Their suggestion was regarded as excellent and epoch-making. However, this measurement method has not been popular in the area of radiological technology because of the complicated procedure of getting the average glandular dose from a mammogram. In this study, we improved the method used by Tanaka et al. and developed a new method, which makes it possible to analyze glandular dose more easily and precisely. We performed an imaging of glandular composition and a histogram analysis of glandular dose, and made clear the validity of our new method. Furthermore, we studied this methods weak points.