胸部単純X線写真における経時的差分画像法の臨床的有用性

概要

論文の詳細を見る
Temporal subtraction is a technique by which a previous chest radiograph is automatically registered with and subtracted from a current radiograph for the enhancement of interval changes. In this study, we evaluated the clinical utility of temporal subtraction in various lung abnormalities. Detection of lung nodules, particularly those overlapping normal anatomical structures such as ribs, heart, and pulmonary hilum was improved. For follow-up examinations of diffuse infiltrative lung diseases, new abnormalities, such as acute exacerbation or associated lung cancer, become more apparent on subtraction images because pre-existing fibrotic changes are clearly subtracted. Diffuse ground-glass opacities, which may be difficult to evaluate by chest radiography, are demonstrated as characteristic mild diffuse inhomogeneous opacities by temporal subtraction. Our results indicate that temporal subtraction can provide improved accuracy in the interpretation of chest rediographs.
社団法人日本放射線技術学会の論文
2000-03-20