64排螺旋CT在冠状动脉旁路移植术后随访中的应用

摘要

目的:探讨64排螺旋CT在冠状动脉旁路移植术(coronary artery bypass grafting,CABG)患者术后随访中的应用价值.方法:对27例接受CABG的患者行64排冠状动脉螺旋CT检查和血管重建,同时进行冠状动脉造影检查,观察并比较移植血管成像.结果:27例患者共完成79支冠状动脉旁路移植,冠状动脉造影检查显示移植血管均成像,其中包括乳内动脉桥血管24支,大隐静脉桥血管52支,桡动脉桥血管3支.64排螺旋CT检查显示乳内动脉桥血管狭窄率为25.0%,大隐静脉桥血管狭窄率为57.7%,桡动脉桥血管狭窄率为66.7%,与冠状动脉造影比较差异无统计学意义(P>0.05).64排螺旋CT检查假阳性率为8.6%,假阴性率为2.3%.结论:64排螺旋CT检查是CABG患者术后随访较理想的方法,且安全、快捷、无创伤.%Objective:To explore the clinical value of 64 row helical CT in the follow-up of coronary artery bypass grafting. Methods: Twenty-seven cases with coronary artery bypass grafting ( CABG) were examined, revascularizated and angiographied with 64 row helical CT, and the grafts imaging were analyzed. Results: Twenty-seven cases were treated with 79 arteries blood vessels bridge, and images of all grafts were obtained by using coronary angiography, which included 24 internal mammary grafts, 52 saphenous vein grafts and 3 radial artery grafts. The bridge hemal stricture rates were 25. 0% in internal mammary grafts,57. 7% in saphenous vein grafts and 66.7% in radial artery grafts under 64 row helical CT, which had no statistical significance ( P > 0. 05) compared with coronary angiography. The false positive and negative rates of 64 row helical CT were 8. 6% and 2. 3% respectively. Conclusions: Sixty-four row helical CT is a safe,fast and non-invasive diagnostic method,which is a ideal method for follow up coronary artery bypass grafting.