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目的研究多层螺旋CT在肺动脉栓塞诊断中的应用及诊断价值。方法使用8层螺旋CT扫描机,采用层厚2.5 mm、150 kV、220 mA行胸部增强扫描,利用原始数据进行多平面重建(multiplanar reformation,MPR)对50例诊断为肺动脉栓塞的患者进行影像学研究。结果病变共累积肺动脉378支,其中左/右肺动脉24支,叶肺动脉89支,段肺动脉151支,亚段肺动脉114支。结论CT下肺动脉造影是充分利用螺旋CT扫描快速,敏感性高,无创等特性,可直接显示段及亚段级肺动脉内栓子,而且肺动脉和下肢静脉联合成像可诊断肺栓塞及下肢静脉血栓,可确定可疑及伴随的栓塞疾病,已基本取代数字减影血管造影(digital subtraction angiography,DSA),成为肺动脉栓塞的首选检查方法。
Objective To study the application and diagnostic value of multislice spiral CT in the diagnosis of pulmonary embolism. Methods Fifty patients diagnosed as pulmonary thromboembolism underwent multiplanar reconstruction (MPR) by using 8-slice spiral CT scanner with thoracic enhancement scan with layer thickness 2.5 mm, 150 kV and 220 mA. the study. RESULTS: A total of 378 pulmonary arteries were accumulated in the lesion, including 24 left / right pulmonary arteries, 89 pulmonary arteries, 151 pulmonary arteries and 114 pulmonary arteries. Conclusion CT pulmonary angiography is the rapid use of spiral CT scan, high sensitivity, noninvasive and other features, can be directly displayed segment and subsegment of pulmonary embolism, pulmonary and lower extremity venous imaging can be diagnosed pulmonary embolism and venous thrombosis, Suspected and associated embolic disease can be identified and has largely replaced digital subtraction angiography (DSA) as the preferred method of pulmonary embolism.