目的评价与分析中央型肺癌 纵隔、肺门血管肿瘤侵犯应用多层螺 旋CT血管造影临床应用价值。方法 采 用螺旋CT检查78例中央型肺癌患者， 并进行增强扫描。采用盲法阅片，比 较与分析诊断结果、病理结果、手 术结果。结果 CT血管造影和横断面 图像敏感度分别为97.44%(76/78)、 83.33%(65/78)(X2 =7.88，P<0.05)； 特异度分别为92.31%(72/78)、 89.74%(70/78)(X2 =0.11，P>0.05)。准确 度分别为94.87%(74/78)、87.18%(68/78) (X2 =5.53，P<0.05)。结论 采用多层螺旋 CT血管造影判断中央型肺癌纵隔、肺门血 管肿瘤侵犯，其具有较高敏感度和准确 度，同时特异度较高。所以临床采用多层 螺旋CT血管造影检查术前中央型肺癌患 者，为临床手术方案选择提供有力参考依 据。

Objective Evaluation and analysis on the Clinical Value of Spiral CT Angiography in the diagnosis of central type lung cancer mediastinum and lung blood vessel tumor invasion. Methods 78 cases with central type lung cancer underwent enhanced spiral CT. The diagnostic, pathological and surgical results were compared and analyzed. Results The image sensitivity of CT angiography and axial images was 97.44% (76/78), 83.33% (65/78) (X2 =7.88, P<0.05); the specificity was 92.31% (72/78), 89.74% (70/78) (X2 =0.11, P>0.05); the accuracy was 94.87% (74/78), 87.18% (68/78) (X2 =5.53, P<0.05). Conclusion The diagnosis of central type lung cancer mediastinum and lung blood vessel tumor invasion by mult-slice spiral CT angiography has high sensitivity and accuracy and specificity. The clinical application of multi-slice spiral CT angiography in the preoperative diagnosis of central type lung cancer can provide important basis for the selection of clinical operation scheme.