多层螺旋CT在评价冠状动脉支架中的价值

The value of multislice spiral CT in evaluation of coronary arterial stent

目的:探讨多层螺旋CT冠状动脉造影(multi slice spiral computed tomographic angiography,MSCTA)在冠状动脉支架评价中的价值。方法:对28例冠状动脉支架患者行冠状动脉MSCTA检查,利用MSCT的各种先进的后处理功能对冠状动脉进行重建,以显示冠状动脉支架的形态、位置及有无支架术后的再狭窄。结果:在28例多层螺旋CT冠状动脉造影中2例由于患者有严重的窦性心率不齐,多层螺旋CT检查重建图像质量欠佳,其余患者多层螺旋CT冠状造影检查均成功的显示冠状动脉各主支(左主支、回旋支、前降支右支冠状动脉),且可显示所有冠状动脉支架的形态、位置,其中9例患者的10个支架术后出现再狭窄,所有患者行MSCT冠脉造影检查无1例患者出现并发征,所有MSCT冠脉造影检查怀疑支架再狭窄的患者均同时行选择性血管造影检查,其中8例患者的8个支架诊断与MSCT冠脉造影检查结果相一致,其符合率为88.89%。结论:冠状MSCTA是一种安全可靠的检查方法,可作为冠状动脉一种无创检查方法,是评价冠状动脉支架有无再狭窄的重要检查手段之一。

Objective： To study the value of MSCrA in evaluation of coronary arterial stent. Methods： 28 patients implanted coronery arterial stent were performed MSCTA scan, using various advanced post-processing function of Mscr to neconstruct coronary artery for demonstrated shape, position of stent, and detected if the stent were re-stenosis after implantation. Results： Reconstructive coronary artery images of 2 patients with severe sinus arrhythmia were not displayed clearly. In other （26 of 28） patients, coronary artery branches, shape and position of stent were clearly demonstrated. 10 stents of 9 patients were found re-stenosis. All patients had not any complications. All patients with re-stenosis of stent underwent selective coronary artery angiography, the coincident rate of MSCTA and conventional angiography was 88.89% （8 stents of 7 patients）. Conclusion：As a non-invasive examination, MSCTA is a valuable method to detect re-stenosis of coronary arterial stent.