高清CT对冠状动脉支架再狭窄的评估

The value of high definition computed tomography in the evaluation of coronary artery in-stent restenosis

目的:使用高清CT评估冠状动脉支架再狭窄。方法:模拟不同程度狭窄(50%、85%、100%)的冠状动脉支架,经高清CT扫描成像,对支架及腔内图像质量评分,并对狭窄程度进行测量,与实际狭窄程度比较。结果:不同狭窄程度支架的图像质量较高,可评度达93.1%。支架再狭窄程度测量值与实际狭窄程度的差异无统计学意义(P>0.05)。结论:高清CT支架成像的图像质量高,能对冠状动脉支架再狭窄进行准确评估。

Objective： To evaluate the coronary artery in-stent restenosis using high definition computed tomography. Methods： The stents simulating varying degree of stenosis（ 50%,85% and 100%） were scanned using high definition CT,and the image quality of stent and lumen were scored. The degree of stenosis was measured,and compared with the actual degree. Results： The image quality of stent with varying degree of stenosis was higher,and the rate of available evaluation was 93. 1%. The difference between the in-stent restenosis degree and actual stenosis degree was not statistical significant（ P〉0. 05）. Conclusions： The image quality of stent of high definition CT is high,which can accurately evaluate the coronary artery in-stent restenosis.