正常与异常肺小叶高分辨率CT的初步研究  

High-Resolution CT Study of Normal and Abnormal Secondary Pulmonary Lobules

作　　者：熊明辉[1] 何望春[2] 

机构地区：[1]空军总医院CT室 [2]湖南医科大学湘雅医院

出　　处：《空军总医院学报》1993年第4期194-196,共3页Journal of General Hospital of Air Force,PLA

摘　　要：本文对16个正常肺叶标本进行了HRCT扫描并与相应的标本切面进行了对照,分析了50例正常成人胸部CT和HRCT征象。结果表明,正常肺小叶呈边缘不规则的多边形结构,每边长约7～22mm,小叶间隔厚约0.1～1.0mm。在HRCT上,小叶间隔呈直线状或光滑的曲线状,小叶核和小叶间隔之间呈均一的低密度区。分析了21例弥漫性肺疾病的HRCT征象,特发性肺纤维化小叶间隔增厚,小叶结构变形,小叶间隔与肺组织交界面不清楚。肺淋巴道转移癌亦见小叶间隔增厚,但与肺组织交界面清楚,无小叶结构变形,间隔内可见结节,小叶间隔内多发的结节排列呈“串珠状”,此征高度提示肺转移癌。This combined study consists of high resolution CT of 16 normal lung lobe samples and lung anatomic sections obtained at the same levels. Fifty cases of routine CT and HRGT images of normal chest are analyzed. The results show that secondary pulmonary lobule is irregularly polyhydral with length of each side approximately from 7 to 22 mm and the thickness of interlobular septa from 0.1 to 1.0 mm. On HRGT the septa appear straight or smooth curve linear densities. The region between the lobular core and septal structures is hemogenously radiolucent. HRCT appearances of 21 cases with chronic diffuse lung disease are investigated. There is irregular thickening of interlebular septa due to fibrosis in idiopathic pulmonary fibrosis and distortion of architecture of the secondary lobule, whereas on pulmonary lymp-hangitic carcinomatosis, the thickened septa have smooth margins, lobules are not distorted. Multiple nodules in septa show the appearance of a 'beaded septum', The appearance is highly suggestiye of pulmonary metastasis.

关 键 词：肺疾病 CT 弥漫性肺疾病 

分 类 号：R816.41[医药卫生—放射医学] R563[医药卫生—临床医学]