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目的探讨64排螺旋CT冠状动脉成像评价冠状动脉支架通畅性的临床应用价值。方法对62例冠状动脉支架置入术后患者的86枚支架行64排螺旋CT扫描,对照冠脉造影检查结果,评价64排螺旋CT在冠脉支架术后再狭窄的诊断价值。结果针对62例患者置入的86枚支架进行了以冠脉造影为“金标准”的诊断试验评价,无创冠状动脉造影(冠脉CTA)对冠脉支架内再狭窄的诊断的敏感度、特异度、阳性预测值、阴性预测值分别为88.9%、98.6%、66.7%和98.6%。结论冠脉CTA对冠脉支架内再狭窄患者有高的阴性预测值,可应用于冠脉支架术后随访。
Objective To investigate the clinical value of 64-slice spiral CT coronary angiography in assessing coronary artery stent patency. Methods Sixty-six patients with coronary stents were retrospectively analyzed by 64-slice CT scans of 86 stents. The diagnostic value of 64-slice spiral CT in the diagnosis of restenosis after coronary stenting was evaluated. Results A total of 86 stents implanted in 62 patients underwent coronary angiography as the “gold standard” diagnostic test. The sensitivity of noninvasive coronary angiography (CTA) to the diagnosis of coronary stent restenosis , Specificity, positive predictive value and negative predictive value were 88.9%, 98.6%, 66.7% and 98.6% respectively. Conclusions Coronary CTA has a high negative predictive value for coronary in-stent restenosis and can be used for follow-up after coronary stenting.