【摘要】 目的　探讨螺旋CT增强扫描诊断肺栓塞的临床价值。　方法　对 2 0例肺栓塞患者应用螺旋CT连续容积扫描 ,层厚 3mm～ 7mm ,扫描时间 1秒 ,造影剂流速 2 5ml s～ 3 5ml s扫描延迟时间 15秒～ 2 0秒。　结果　肺栓塞的螺旋CT直接征象为腔内充盈缺损 ;间接征象为肺窗“马赛克”征及肺梗死灶。　结论　螺旋CT增强扫描是快速、有效、无创伤诊断肺栓塞的首选诊断方法。更多还原

【Abstract】 Objective To evaluate the clinical value of spiral CT in the diagnosis of pulmonary emboli sm(PE). Methods 20 patients with PE were performed spiral CT volume scanning,slice thickness of 3mm～7mm,scan time was 1s,contrast medium was administered by automatic injec tor with flow rate of 2.5ml/s～3.5ml/s,delay time was 15s～20s. Results In spiral CT the direct signs of the diagnostic features for PE was intraluminal filling defect an d secondary signs included "mosaic sign" on lung window and focus of pulmonary infarction. Conclusion Sprial CT enhancement scanning might be a fast,effective,and non-invasive method for diagnosing PE.更多还原