64排螺旋CT在冠状动脉旁路移植术后随访中的应用

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(P0.05)。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。

The application of 64 row helical CT in the follow-up of coronary artery bypass grafting

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 ofall 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 coronaryangiography.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.