肺紋理を対象とした画像位置合わせ法 : 胸部X線画像の時間的差分法

概要

論文の詳細を見る
We examined a method using the image registration of previous and current chest radiographs for the temporal subtraction technique. Lung markings that traversed the lung substance were assigned as landmarks for image registration. The first derivative filter was employed to emphasize lung markings. To remove costal shadows that were emphasized simultaneously, edge gradients and connectivity in the horizontal direction were analyzed. Previous and current images in which the costal shadows had been deleted and only the lung marking shadows were emphasized were matched by a sequential similarity detection algorithm. The temporal subtraction images, from which a more normal structure was suppressed by this new registration technique, and the morbid temporal changes in 4 of 13 cases(31%)were better enhanced than with the previous method.
社団法人日本放射線技術学会の論文
2000-03-20