Evaluation of in-stent restenosis in coronary artery with high definition computed tomography angiography
10.3969/j.issn.1002-1671.2014.10.010
- VernacularTitle:H DCTA与CAG显示冠状动脉支架内再狭窄的能力比较
- Author:
Wufei CHEN
;
Yibo SUN
;
Dingbiao MAO
;
Yanqing HUA
- Publication Type:Journal Article
- Keywords:
coronary heart disease;
stents;
coronary angiography;
computed tomography
- From:
Journal of Practical Radiology
2014;(10):1642-1645
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the accuracy of high definition computed tomography angiography (HDCTA)in the evaluation of coronary in-stent restenosis.Methods 93 patients with 159 implanted coronary stents who underwent both HDCTA and CAG were included in the study.The sensitivity,specificity,positive predictive value (PPV),negative predictive value (NPV)and diag-nostic accordance rate of HDCTA were calculated.The imaging quality was analyzed by visual estimation.Possible factors that in-fluenced the diagnostic accuracy of HDCTA were evaluated,which included stent location,stent diameter and heart rate in the pa-tients with left anterior descending branch stents.Results Restenosis was found in 21 stents by CAG and 19 stents by HDCTA.The false positive and false negative were 5 and 3,respectively.Sensitivity,specificity,PPV,NPV and diagnostic accordance rate were 90.5%,96.4%,79.2%,98.5% and 95.6% respectively.The image quality was 4 score in 75 stents (47.1%),3 score in 33 (20.8%),2 score in 27 (17%),≤1 score in 24 (15.1%).The image quality of proximal segments,large stents (≥3.0 mm)and slow heart rate (<66 beast per minute)was significantly better than that of distal segments,small stents (<3.0 mm)and fast heart rate (≥6 6 beast per minute).Conclusion HDCTA is a convenient,efficient and non-invasive method for follow-up after im-plantation of the coronary artery stents.
