4例高原红细胞增多症合并肺动脉栓塞的MSCTPA诊断

目的：探讨多排CT肺动脉造影（MSCTPA）对高原红细胞增多症合并肺动脉栓塞的诊断价值。方法：对4例高原红细胞增多症并肺动脉栓塞的患者进行16排CT肺动脉血管造影扫描,图像采用扫描层厚1mm,重建间隔为0.8mm,注射速率采用4.0mL/s获得容积数据进行MIP及VR重建。结果：4例均能显示部位,肺动脉及其分支均有单支或多支栓塞,3例有胸腔积液,1例有肺梗塞,1例有心包积液。结论：高原红细胞增多症是高原地区肺动脉栓塞的重要原因之一,MSCTPA是明确诊断高原地区肺动脉栓塞的首选方法。

A Diagnosis of Pulmonary Embolism Combined with High Altitude Polycythemia with Muliti-slice spiral CT Angiography

objective：To evaluate the effect of muliti-slice spiral CT pulmonary angiography（MSCTPA）in diagnosis of pulmonary embolism combined with high altitude polycythemia.Methods：4 patients with pulmonary embolism combined with high altitude polycythemia were examined by MSCTPA,The reconstruction was conducted with 1.0mm slices,reconstruction intervals of 0.8mm and injection rates of 4mL/s before operations.And the three-dimension reconstruction of maximum intensity projection （MIP） and volume rendering （VR） were reconstructed by acquired volume data.Results：4 cases could show and involved with pulmonary embolism in pulmonary artery or branches.Of them,3 cases had pleural effusion,1 case of pulmonary infarction.Conclusions：MSCTPA could be the first choice for diagnosis of pulmonary artery embolism at high altitude.