Evaluation of coronary artery in-stent restenosis using 64-slice CT
- VernacularTitle:64层螺旋CT评价冠状动脉支架内再狭窄的价值
- Author:
Xin LIU
;
Ying LI
;
Li YANG
;
Xi-Hai ZHAO
;
Xin-Jiang WANG
;
Shao-Hong ZHAO
;
Yu-Xiao ZHANG
;
Zu-Long CAI
;
- Publication Type:Journal Article
- Keywords:
Tomography X-ray computed;
Coronary angiography;
Stents
- From:
Chinese Journal of Radiology
2001;0(08):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the accuracy of 64-slice CT in the diagnosis of coronary in-stent restenosis (ISR).Methods Fourteen patients with 37 implanted coronary stents were examined by both 64-slice CT angiography (CTA) and conventional coronary angiography(CCA).The diagnosis of ISR was evaluated by two methods(visual inspection and the measurement of the in-stent contrast attenuation)on CTA.The accuracy of the two methods in the diagnosis of ISR was compared with reference to CCA.Results ISR(＞50%)was found on CCA in 11 stents.CTA with visual inspection and with measurement of in-stent CT attenuation correctly detected ISR in 2 and 3 stents respectively with reference to CCA.The sensitivity, specificity,positive predictive value and negative predicitive value of the two methods were 18%,69%, 20%,67% and 27%,81%,38%,72%,respectively.There was no significant difference (P＞0.05) between the accuracy of two methods.Conclusion The ISR was very difficult to diagnose by 64 slice CT, but the high specificity of 64-slice CT study implied an important role in excluding ISR.
