多层螺旋CT支气管动脉成像在原发性肺癌中的应用

目的利用多层螺旋CT支气管动脉成像探讨原发性肺癌与正常对照组、中心型肺癌与周围型肺癌中支气管动脉（bronchial arteries，BA）显示率及直径大小的差异。方法对64例病理证实的原发性肺癌患者（其中中心型肺癌31例，周围型肺癌33例）和51例正常对照者进行多层螺旋CT支气管动脉成像检查。采用多平面重组、最大密度投影、容积再现等技术对BA进行重建和观察，比较原发性肺癌组与正常组、中心型肺癌组与正常组、周围型肺癌组与正常组、中心型肺癌组与周围型肺癌组之间BA的显示率和直径。结果原发性肺癌组BA显示率为92.19%，正常组为70.59%，两组比较差异具有统计学意义（P＜0.05）；中心型肺癌组BA显示率为100%，与正常组比较差异具有统计学意义（P＜0.05）；原发性肺癌组、中心型肺癌组、周围型肺癌组BA直径与正常组比较差异均有统计学意义（P均＜0.05）；中心型肺癌组BA直径与周围型肺癌组比较差异具有统计学意义（P＜0.05）。结论原发性肺癌组BA显示率及直径均大于正常组，说明BA参与了肺癌的血供；中心型肺癌BA直径增大较周围型肺癌明显，提示两者的血供类型可能存在差异。

Application of multi-slice spiral CT imaging of the bronchial artery for patients with primary lung cancer

Objective To evaluate the difference of the detection rates and diameters of the bronchial arteries(BA) between the primary lung cancer group and the control group and also between the central lung cancer group and the peripheral lung cancer group by multi-slice spiral CT imaging.Methods Multi-slice spiral CT imaging of the bronchial artery was performed on 64 patients with primary lung cancer(including 31 cases of central lung cancer and 33 cases of peripheral lung cancer) confirmed by pathology and 51 members of normal controls.MPR,MIP and VR were reformed for observation of the BA. Results The detection rate was 92.19% in the lung cancer group and 70.59% in the control group,which was significantly different between the two groups(P<0.05).Also the detection rate was 100% in the central lung cancer group,which was significantly different from that in the control group(P<0.05).The BA diameter was significantly different between the lung cancer and the control groups,the central lung cancer and the control groups,the peripheral lung cancer and the control groups,and the central lung cancer and the peripheral lung cancer groups(P<0.05).Conclusion The detection rate is higher and the diameter of the BA is larger in the lung cancer group than in the control group,which indicates that the bronchial artery participates in the blood supply of lung cancer.The dilation of the BA in central lung cancer is more prominent than that in peripheral lung cancer,which might suggest different types of blood supply between the two groups.