Multislice CT Angiography of Coronary Bifurcations and Outcomes After Intervention

Study patients will undergo MSCTA on Toshiba Aquilion CXL 128 slice CT scanner using predefined protocol. The procedure will include calcium scoring (Agatston) then CT angiography using Ultravist 370 contrast agent ((iopromide concentration 370 mg/ml, Bayer Health Care, Germany). MSCTA angiograms will be analyzed using dedicated software Vital Vitrea Advanced 6.2, Vital Images, Minnetonka, Minnesota, US. The bifurcation lesion analyses will include: the measurement of the angle between MB and SB, measurement of the lesion length, reference diameter of the vessel, degree of stenosis, atherosclerotic plaque analysis 10 mm proximal and distal in the MB, and 5 mm from the ostium of the SB, and at the level of maximum stenosis (minimal lumen diameter).