摘要
目的探究能谱CT单能量成像对冠状动脉支架植入术后再狭窄的诊断效果。方法将80例接受冠状动脉支架植入术6-10月后复查的患者作为研究对象,行能谱CT单能量冠状动脉成像(参数为55Kv)检查,1周后行冠状动脉造影(CAG)检查。以CAG结果为标准,评估能谱CT单能量冠状动脉成像对冠状动脉支架植入术后再狭窄的诊断效能。结果以CAG结果作为标准,能谱CT单能量成像诊断支架内再狭窄的灵敏度为91.18%,特异度为90.83%,阳性预测值为75.61%,阴性预测值为97.06%,准确性为90.91%;能谱CT单能量成像诊断植入部位位于回旋支以及植入支架>3mm的支架内再狭窄诊断效能更高,灵敏度、特异度、阳性预测值、阴性预测值和准确性分别为87.5%、94.74%、87.5%、94.74%、96.15%和90%、97.14%、90%、97.14%、97.73%。结论能谱CT单能量成像对冠状动脉支架植入术后再狭窄有较好的诊断效能,值得临床推广应用。
Objective To explore the effect of spectral CT single energy imaging for the diagnosis of coronary artery restenosis after stent implantation.Methods 80 review patients who underwent coronary artery stent implantation for 6 to 12 months were obtained as research objects,spectral CT single energy imaging(parameters of 55 kv)was executed.After 1 week,coronary angiography(CAG)examination was executed.On the basis of the CAG results,the diagnosis effect of spectral CT single energy imaging on coronary artery restenosis after stent implantation was evaluated.Results Using CAG results as a standard,the sensitivity of spectral CT single energy imaging for the diagnosis of coronary artery restenosis after stent implantation was 91.18%,the specificity was 90.83%,the positive predictive value was 75.61%,the negative predictive value was 97.06%,the accuracy is 90.91%;The diagnosis effect was better when diagnosing patients with circumflex artery stent or>3 mm stent,the sensitivity,specificity,positive predictive value,negative predictive value,accuracy was 87.5%,94.74%,87.5%,94.74%,96.15%and 90%,97.14%,90%,97.14%,97.73%.Conclusion The spectral CT single energy imaging has good diagnosis effect on coronary artery restenosis after stent implantation,and is worthy of clinical popularization and application.
作者
杨俊潇
谢慧
周帮建
安冬会
吴绍全
YANG Jun-xiao;XIE Hui;ZHOU Bang-jian(Department of Radiological,Dazu Hospital of First Affiliated Hospital of Chongqing,Chongqing 402360,China)
出处
《中国CT和MRI杂志》
2019年第8期51-53,71,共4页
Chinese Journal of CT and MRI
基金
重庆市大足区科技发展项目,编号:DZKJ.2018ACC1007
