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

摘要: 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。

Abstract: 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.