16层螺旋CT肺动脉造影对肺动脉栓塞的诊断价值

16-slice Spiral CT Contrast Enhanced Imaging Diagnosis Evaluation of Pulmonary Embolism

目的:评价16层螺旋CT肺动脉造影对肺动脉栓塞的诊断价值。材料与方法:对30例行16层螺旋CT肺动脉造影检查的肺动脉栓塞患者进行回顾性分析。使用16层螺旋CT扫描机,进行平扫胸部和增强扫描,并在工作站进行图像后处理,获得肺动脉多平面重建图像及三维立体图像。结果:对30例497支肺动脉分支进行分析,受累率为33.6%;栓子发生在主肺动脉/左右肺动脉干及叶段肺动脉。其直接征象为腔内充盈缺损142支(56%),完全阻塞37支(15%);间接征象"马赛克"征12例,肺梗死4例,肺动脉高压12例,胸腔积液9例。结论:16层螺旋CT扫描速度快,图像清晰,不遗漏小病灶,16层螺旋CT肺动脉造影是肺支脉栓塞安全、迅速、无创的有效诊断方法。

Purpose： To evaluate the diagnosis value of 16-alice spiral CT contrast enhanced imaging in pulmonary embolism. Materials and Methods： 30 cases were studied retrospectively. Plain scans and contrast enhanced scans of lung were performed in all patients. MPR and 3D imagings were taken in workstation of CT. Results： Study the 497 pulmonary arteries of 30 patients. The involve rate is 33.6%. The embolisms were found in main pulmonary arteries, left/right pulmonary arteries and lobule/segment pulmonary arteries, direct imagings are filling defect of duct in 142 branches （56%）, block complete in 37 branches （15%）. Indirect imagings are mosaic perfusiun in 12 cases, pulmonary infarct in 4 cases, high pulmonary artery pressure in 12 cases, thorax fluid collection in 9 cases. Conelusion： 16 - slice spiral CT contrast enhanced imaging is a rapidly imaging definition method. It is a safe, rapid, nonintervention method in diagnosis pulmonary embllism.