The evolution and investigation of native coronary arteries in patients after coronary stent implantation: a study by 320-detector CT angiography.
To study the role of 320-detector coronary computed tomography angiography (CTA) in assessing native coronary arteries in patients treated with coronary stents. 123 patients with coronary stenting received both CTA and conventional coronary angiography (CCA) within 1 day. The clinical parameters, coronary calcium scoring, CTA and CCA were analyzed to determine the prevalence of significant stenosis of native coronary arteries (SSNCA), the predictive value of CTA and the factors correlating with SSNCA and newly developed SSNCA after stenting (NDSSNCAS), with CCA as the standard of reference, using both vessel-based analysis (VBA) and patient-based analysis (PBA). Both the source and the reconstructed images were analyzed by CTA. All native coronary arteries were interpretable independent of cardiac motion. CTA showed a sensitivity/specificity of 93.5%/97.3% and 92.5%/92.5% in diagnosing SSNCA in VBA and PBA, respectively. The significant factors related to SSNCA were higher calcium scores (P = 0.003), a higher serum glucose level (P = 0.048), a greater number of vessels without previous stent placement (P = 0.003) and fewer stents implanted within the vessels (P = 0.003). The risk factors showed no significant correlation from PBA on SSNCA or from NDSSNCAS on either VBA or PBA. CTA demonstrates excellent correlation with CCA. The prevalence of SSNCA is significantly correlated with the presence of higher calcium scores in the arteries, a higher serum glucose level, a greater number of vessels without previous stent placement and fewer stents implanted within the vessels; PBA on SSNCA and NDSSNCAS on both VBA and PBA showed no significance.
Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital at Linkou, College of Medicine, Institute for Radiological Research, Chang Gung University, Taoyuan, 333, Taiwan.
Yu-Hsiang
YH
Juan
Yu-Chieh
YC
Huang
Zhonghua
Z
Sun
I-Chang
IC
Hsieh
Wen-Hui
WH
Chan
Chun-Chi
CC
Chen
Kuo-Chun
KC
Hung
Ming-Shien
MS
Wen
Yung-Liang
YL
Wan
D000328:Adult; D000368:Aged; D001786:Blood Glucose / Q000032:analysis; D017023:Coronary Angiography / Q000379:methods*; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging / Q000628:therapy*; D023921:Coronary Stenosis / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D061330:Multidetector Computed Tomography; D011237:Predictive Value of Tests; D011446:Prospective Studies; D012680:Sensitivity and Specificity; D012720:Severity of Illness Index; D015607:Stents; D061205:Vascular Calcification / Q000000981:diagnostic imaging*
D001786:Blood Glucose