多层螺旋CT对肺动脉栓塞的诊断价值

目的:评价多层螺旋CT对急性肺动脉栓塞的诊断价值。方法:22例临床确诊的肺动脉栓塞患者,先行螺旋CT平扫,后经肘静脉注入碘海醇100 ml,延迟15~20 s和25~30 s行两次扫描。结果:平扫的间接征象:肺纹理稀疏11例,肺梗死灶形成9例,肺动脉高压2例,胸膜肥厚3例,胸腔积液8例。增强后的直接征象:充盈缺损(附壁性32支,部分性30支,完全性92支和中心性即轨道征15支)和动脉面细小14支。结论:螺旋CT肺动脉造影是急性肺动脉栓塞安全、迅速、无创伤的有效诊断方法。

Dignostic value of multi-slice spiral CT in pulmonary embolism

Objective:To study the value of spiral CT in diagnosis of acute pulmonary embolism(PE).Methods: Twenty-two patients with PE were scanned with MSCT pre-and post-injection of 100ml contrast medium(iohexol injection 300mgI/ml) from elbow vein.Enhanced CT scan were performed after injection of 15～20 seconds and 25～30 seconds respectively.Results: The indirect signs on plain CT image: lung-making sparse in 11 cases;lesion of pulmonary infarction in 9 cases;pulmonary hypertension signs in 2 cases;pleural thickening in 3 cases;pleural effusions in 8 cases. The direct signs on enhanced CT images: intraluminal filling defect(mural filling defect in 32 vessels;partial filling defect in 30 vessels;total occlusion in 92 vessels and central filling defect that was railway-track sign in 15 vessels) and smaller caliber of pulmonary artery in 14 cases.Conclusion: Enhanced pulmonary SCT is the safe,quick and effective imageologic examination for acute PE.