16层螺旋CT肺动脉造影对肺动脉栓塞的诊断价值

Value of 16-slice spiral CT pulmonary angiography on diagnosis of pulmonary embolism

目的探讨16层螺旋CT肺动脉造影(MSCTPA)对诊断肺动脉栓塞的临床价值。方法应用16层螺旋CT对临床怀疑肺动脉栓塞的33例患者进行MSCTPA,采用容积显示VR,最大密度投影MIP,多平面重建法MPR及曲面重建CPR等重建技术。结果 16层螺旋CT肺动脉成像可充分显示肺动脉血栓的大小、分布、范围。直接征象为部分性充盈缺损、附壁性充盈缺损、中心性充盈缺损即轨道征和完全阻塞;间接征象为局限性肺纹理稀疏、肺动脉高压、右心扩大、胸腔积液和肺梗死。结论多层螺旋CT是诊断肺动脉栓塞的安全、无创、快捷的检查方法。

Objective To investigate the clinical value of 16-slice spiral MSCTPA in the diagnosis of pulmonary embolism.Methods 33 patients clinically suspected for pulmonary embolism were examined with the 16-slice spiral MSCTPA.The images underwent reconstruction with volume rendering（VR）,maximum intensity projection（MIP）,multiple planar reconstruction（MPR） and curved planar reformation（CPR）methods.Results of 16-slice spiral MSCTPA could accurately show the location and the size of thrombus.Direct signs partial filling defect,mural filling defect,central filling defect that was track symptoms.Indircet signs the limitations of lung markings sparse,pulmonary hypertension,expanding the right heart,pleural effusion and the focus of pulmonary infarction.Conclusion 16-slice spiral MSCTPA is safe,noninvasive and quick diagnostic method of the pulmonary embolism.