الفهرس 
Introduction & Aim of the workOnly 14 pages are availabe for public view
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Abstract
PCI with stent implantation have improved clinical outcome of CAD patients. However, stent under-expansion, mal-apposition, and suboptimal deployment are associated with acute (thrombosis) and long-term (in-stent restenosis) stent complications. Currently, there are insufficient number of studies that compare the accuracy of stent measurements using IVUS, QCA, and SB, a motion-corrected fluoroscopic imaging technique that enhances stent visualization.
This study included patients with known CAD subjected to PCI in Apollo Gleneagles Hospital, Heart Institute, Kolkata, India from June 2015 to June 2016,. We included patients aged 18 years old or more with a clinical indication for stent implantation. Patients refused to participate in the study, undergoing stent implantation for in-stent restenosis, or with complex anatomy or very small vessels preventing the use of IVUS were excluded from the study. We collected data from the study population including Clinical history physical examination, Data of 12-lead electrocardiogram, and echocardiography (2D, M-mode, and Doppler). The data were recorded in data sheets on the first contact with the patients.
We performed SB and IVUS after stent implantation and appropriate judgment by visual evaluation of coronary angiogram results. Measurement of the reference vessel and stented part was made by IVUS and was available to decide about the procedure. Post-procedure and off-line quantitative analysis of angiogram and SB were performed in order not to affect patients’ care.
We found a high correlation between IVUS and SB regarding the minimal stent diameter measurements (r = 0.86; p < 0.001) when compared with IVUS and QCA (r = 0.69; p < 0.001). Bland–Altman scatter plot revealed a good agreement between IVUS and SB, whereas a lesser agreement between IVUS and QCA.
Significant correlation and good agreement were found between SB and IVUS with a small difference in minimal stent diameter between the two modalities. SB can be used in centers where IVUS is not available or IVUS is not routinely used in cases with complex coronary anatomy.