Ren H, Kuhlman J E, Hruban R H, Fishman E K, Wheeler P S, Hutchins G M
Department of General Surgery, Johns Hopkins Medical Institutions, Baltimore, MD.
J Comput Assist Tomogr. 1990 Jan-Feb;14(1):82-6.
To evaluate the role of high resolution CT (HRCT) in the diagnosis of pulmonary infarcts, we selected 83 postmortem lung specimens with subpleural densities from a collection of 180 lungs that had been prepared by a method which allows for a direct radiologic-pathologic correlation. Twelve of the lungs had pulmonary infarcts and 71 lungs had other disorders that had produced a subpleural shadow on HRCT. Lungs were evaluated for the presence of wedge-shaped pleural-based densities and for the presence of an associated vascular sign. There was no significant difference in the incidence of wedge-shaped densities on HRCT between lungs with pulmonary infarcts and lungs with pulmonary hemorrhage, pneumonia, tumor, or edema (p greater than 0.05). A vascular sign associated with a subpleural density was, however, more common (p less than 0.01) in lungs with pulmonary infarcts. We suggest that the vascular sign associated with a wedge-shaped density may be of importance in diagnosing pulmonary infarcts by HRCT.
为评估高分辨率CT（HRCT）在诊断肺梗死中的作用，我们从180个已通过一种允许直接进行放射学-病理学对照的方法制备的肺脏标本中，选取了83个具有胸膜下密度的尸检肺标本。其中12个肺有肺梗死，71个肺有其他在HRCT上产生胸膜下阴影的疾病。评估肺脏是否存在楔形胸膜下密度以及是否存在相关的血管征。肺梗死的肺与肺出血、肺炎、肿瘤或水肿的肺在HRCT上楔形密度的发生率无显著差异（p>0.05）。然而，与胸膜下密度相关的血管征在肺梗死的肺中更常见（p<0.01）。我们认为与楔形密度相关的血管征在通过HRCT诊断肺梗死中可能具有重要意义。
