The diagnostic value of the coronary artery stent restenosis by the filter function 56 algorithm and half cycle reconstruction in coronary artery CT angiography
ZHENG Kuikui, MAN Yi, WANG Zhenzhang, CAO Guoquan.
Department of Radiology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325015, China
ZHENG Kuikui,MAN Yi,WANG Zhenzhang, et al. The diagnostic value of the coronary artery stent restenosis by the filter function 56 algorithm and half cycle reconstruction in coronary artery CT angiography[J]. JOURNAL OF WEZHOU MEDICAL UNIVERSITY, 2020, 50(12): 990-993.
Abstract：Objective: To compare the diagnostic efficacy between the filter function 56 algorithm and half cycle reconstruction (FHR) and routine reconstruction (RR) in the diagnosis of coronary stent restenosis by 320-slice CT coronary angiography (CCTA). Methods: The CCTA data of the patients with history of coronary stent implantation in the First Affiliated Hospital of Wenzhou Medical University was analyzed retrospectively.Conventional coronary angiography (ICA) was used as the gold standard in comparison of the differences between FHR and RR imaging in the diagnosis of coronary stent stenosis. Results: A total of 99 patients or 190 implanted stents were included in this experiment. With ICA as the gold standard, 63 stents were restenosis or occlusion.There was statistical difference between FHR and RR images (P<0.05). Compared with ICA, the sensitivity,specificity, positive predictive value and negative predictive value of RR images were 76.1%, 78.7%, 64.0% and 86.9%; FHR imaging showed sensitivity of 98.4%, specificity of 96.8%, positive predictive value of 93.9%, and negative predictive value of 99.1%, respectively. Furthermore, FHR had a high consistency with ICA (Kappa>0.8), while RR had a poor consistency with ICA (Kappa<0.4). Conclusion: FHR reconstruction under 320-slice CT can effectively improve the diagnostic performance of the coronary stent restenosis.
