64层螺旋CT对冠状动脉支架术后再狭窄的评价  

作　　者：王耀彬[1] 刘烨[1] 韩向东[1] 温友信 朱栓庄 

机构地区：[1]武警北京总队第二医院放射科,100037

出　　处：《当代医学》2010年第18期5-7,共3页Contemporary Medicine

摘　　要：目的评价64层螺旋CT诊断冠状动脉支架内再狭窄(ISR)的临床应用价值。方法采用64层螺旋CT对32例冠状动脉支架置入术后的患者(共计54枚支架)进行CT冠状动脉成像(CTA)。在CTA上,通过肉眼观察方法诊断ISR。结果 39枚支架中,CCA检出ISR(≥50%)11枚,正常(包括ISR<50%)28枚。与CCA对照,CTA肉眼观察法正确诊断ISR8枚,无狭窄24枚。以冠状动脉造影(ISR≥50%)为标准,分析ISR的敏感性、特异性、阳性预测值和阴性预测值分别为72.7%、85.7%、66.7%、88.9%。结论 64层螺旋CT诊断支架腔内ISR有一定的限度,但能较准确地区分支架通畅和闭塞;对支架边缘型ISR显示了较好的准确性。Objective To evaluate the accuracy of 64-slice CT in the diagnosis of coronary in-stent restenosis（ISR）.Methods 32 patients with 54 implanted coronary stents were examined by both 64-slice CT angiography（CTA） and conventional coronary angiography（CCA）.The diagnosis of ISR was evaluated by visual inspection on CTA.The accuracy of diagnosis of ISR Was compared with reference to CCA.Results ISR（50%） was found on CCA in 11 stents.The sensitivity,specificity.positive predictive value and negative predicitive value of the CTA were 72.7%,85.7%,66.7%,88.9%,respectively.Conclusion 64-slice spiral CT has good accuracy in evaluating and differentiating restenosis after stent implantation,especially peripheral ISR.

关 键 词：体层摄影术 X线计算机 冠状血管造影术 支架 

分 类 号：R541.4[医药卫生—心血管疾病]