DSCT对PCI术后管腔再狭窄的诊断价值

THE VALUE OF DSCT IN THE DIAGNOSIS OF RESTENOSIS OF CORONARY ARTERY AFTER PCI

目的评估双源CT(DSCT)冠状动脉成像检查对冠心病冠状动脉支架置入术(PCI)术后病人支架内管腔再狭窄的诊断价值。方法 2012年4—12月,选取就诊于我院心脑血管分院的冠心病PCI术后病人98例,进行DSCT冠状动脉成像检查,以选择性冠状动脉造影(CAG)为标准,观察其诊断的灵敏度、特异度及准确性。结果 DSCT冠状动脉成像对冠状动脉支架内管腔情况显示良好,显示PCI术后管腔再狭窄与CAG检查相比差异无统计学意义(P>0.05),其诊断的灵敏度为87.8%,特异度为95.7%,准确性为93.4%,阳性预测值为92.8%,阴性预测值为91.3%。结论 DSCT冠状动脉成像作为一种方便、经济、安全、无创的检查手段,可作为冠心病PCI术后病人定期复查、预后评估及管腔再狭窄筛查的有效方法。

Objective To evaluate the value of dual-source CT （DSCT） in the diagnosis of restenosis of coronary artery after PCI in patients with coronary heart disease （CHD）. Methods From April to December 2012, patients with CHD after PCI were enrolled for coronary artery imaging using DSCT to observe its sensitivity, specificity and accuracy by comparing with the finding of selective coronary angiogram （SCA）. Results DSCT coronary imaging clearly demonstrated the lumen in which the stent indwelled, indicating that the incidence of restenosis was not significantly different as compared with SCA （P〉0.05）, its diagnostic sensitivity, specificity and accuracy was 87.8%, 95.7% and 93.4%, respectively; its positive and negative predictive value was 92.8% and 91.3%, respectively. Conclusion Being a convenient, economical, safe, and noninvasive means of examination, DSCT can be used as an effective method to periodically recheck CHD patients after PCI, predict their prognosis and screen the restenosis of the coronary artery.