肺动脉栓塞的多层螺旋CT诊断价值

Diagnostic value of multislice spiral CT in pulmonary embolism

为了探讨多层螺旋CT对肺动脉栓塞(PE)的诊断价值,回顾性分析32例临床确诊为PE患者的CT肺动脉成像(CTAP)资料,并用最大密度投影(MIP)、多平面重建(MPR)及PE Dection 1.0软件等显示肺动脉主干、肺叶、肺段及亚段的栓塞。32例PE患者共检出亚段以上受累动脉128支,CTAP的直接征象为栓子形成的各种充盈缺损。间接征象包括局限性肺纹理稀疏、肺内实变影、肺动脉扩张、右心增大及胸腔积液。初步研究结果提示,CT-PA能清楚地显示PE的直接与间接征象,是诊断PE的首选检查方法。

The objective of this study was to detect the diagnostic value of multislice spiral CT in pulmonary embolism.Thirty-two patients with PE underwent 64-slice spiral CT pulmonary arteriography（CTAP） were analysed retrospectively and many kinds of methods including maximum intensity projection（MIP）,multip lanar reconstruction（MPR）,and PE Dection 1.0 software were used to show the embolism in central,lobar,segment and peripheral regions.The 128 branches of pulmonary artery were involved in 32 cases.The direct signs of various filling defect were displayed with CTPA and some indirect signs could also be detected including the sparsely marked local lung veins,parenchymal opacities,the dilatation of central pulmonary arteries,the enlargement of the right heart and pleural effusion.In conclusion,the direct and indirect signs of PE can be showed clearly and CTPA can be regarded as the first choice for the diagnosis of PE.