3. CR 画像の最適化(ディジタル X 線画像の最適化 : 被曝線量の観点から)

概要

論文の詳細を見る
The conventional screen/film system combines sensor, display and storage functions all together in one unit, which makes it difficult to optimize these functions separately. With the computed radiography (CR) system, on the other hand, these three functions are separated from each other into units, so that individual functions can be readily optimized by digital image processing techniques. The basic principle of CR system is to produce images optimized for various kind of diagnosis consistently. The image processing is performed to automatically normalize digital image data so that consistent image total density and contrast is always ensured irrespective of variations in X-ray dose and energy. The image processing optimized for each set of exposure menus is performed, i. e., gradation processing, frequency processing, and dynamic range control processing. Finally, the relationships between patient dose and the image quality of CR system are described.
公益社団法人日本放射線技術学会の論文
1993-12-01