胸部CT読影の基礎

摘要

目的．胸部CT読影の基礎となるべき項目を検討した．方法．通常CTでの気管支分岐様式における注意点，既存構造の把握，さらに病変濃度をみた．結果．肺既存構造の把握として気管支，肺動静脈の同定に加えて，病変を小葉構造との関連で見ることも重要である．結論．異常陰影そのもの解析の前に，気管，主気管支から始め，小葉を含めた詳細な病変の場を把握し，病変濃度は淡い濃度上昇を呈する，いわゆるすりガラス陰影や，軟部陰影を呈する濃い陰影の鑑別診断も行う必要がある．Objective. To assess the important points of view from reading for chest CT images. Materials and Methods. CT images were examined due to the bronchial branching style and the density of abnormal areas. Results. It is important to understand the relation the lesions and pulmonary arteries, veins, and the secondary pulmonary lobules. Conclusion. Differential diagnosis should be done based on the lung inheritent structure including the secondary pulmonary lobules before the recognition of the abnormal shadows and density of lesions.