Figure 27.

Correlation between narrower angulation and CCTA-derived CFD analysis.

Left coronary bifurcation angle was measured 53º and 55.7º between LAD and LCx on CCTA and ICA in a 65-year-old male, respectively. Significant stenosis (> 60%) was noticed at LAD and LCx on CCTA, but no significant stenosis (42%-48%) was confirmed on ICA (images not shown). (A-C): No significant change was observed with wall shear stress, flow velocity and wall pressure. Arrow refers to the mild stenotic site of LAD, while arrowheads point to the pre- and post-stenotic locations. Reprint with permission under the open access from Sun and Chaichana.^[190] CCTA: coronary computed tomography angiography; CFD: computational fluid dynamic; LAD: left anterior descending; LCx: left circumflex; ICA: invasive coronary angiography.