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目的探讨64排螺旋CT肺动脉造影(MSCTPA)对肺动脉栓塞的诊断价值。方法回顾性分析28例肺动脉栓塞患者的MSCTPA的征象,利用随机软件对各支肺动脉血管1～4级分支血管进行多平面三维重建(MRP)、最大密度投影(MIP)、曲面重组(PCR)和容积再现(VR)。结果 28例肺动脉栓塞病例中,受累肺动脉及分支共102支,CTA直接征象表现:偏心型充盈缺损、中心型充盈缺损及完全闭塞性充盈缺损3型;CT间接征象表现:肺动脉高压、肺纹理稀疏、心脏增大、胸腔积液、心包积液,合并肺感染等。结论 64排螺旋CT肺动脉增强扫描具有无创、快速、直接、特异性较高及后处理功能强大的特点,为临床定性诊断及溶栓治疗提供可靠的依据;现64排螺旋CT肺动脉造影(MSCTPA)已成为肺动脉栓塞的首选检查手段。
Objective To investigate the diagnostic value of 64-slice spiral CT pulmonary angiography (MSCTPA) for pulmonary embolism. Methods The signs of MSCTPA in 28 pulmonary embolism patients were retrospectively analyzed. MRP, MIP, PCR and PCR were performed on the branches of the arteries of the first to fourth branches of pulmonary arteries by using software. Volume Reproduction (VR). Results Of the 28 patients with pulmonary embolism, there were 102 pulmonary arteries and branches involved. The direct signs of CTA were eccentric filling defect, central filling defect and complete occlusive filling defect type 3. Indirect CT signs showed pulmonary hypertension and sparse lungs , Heart enlargement, pleural effusion, pericardial effusion, pulmonary infection and so on. Conclusion 64-slice spiral CT pulmonary artery enhanced scan has the characteristics of noninvasive, rapid, direct, specific and powerful post-treatment, providing a reliable basis for clinical diagnosis and thrombolytic therapy; 64-slice spiral CT pulmonary angiography (MSCTPA) Has become the preferred method of pulmonary embolism.