Figure 3.
Fractional flow reserve computed tomography (FFRCT) case of a 58-year-old man with recurrent chest pain for 2 months. (A) Coronary computed tomography angiography (CCTA) showed the presence of noncalcified plaque and moderate stenosis (70%) in proximal and mid-left anterior descending artery (LAD). (B) Invasive coronary angiography (ICA) showed LAD had a long lesion with 70% stenosis. (C) FFRCT calculated with computational fluid dynamics (CFD). (D) FFRCT using machine learning algorithm. The FFRCT values with CFD and machine learning were 0.76 and 0.67, respectively. Both were positive with different value. The invasive catheter-derived FFR (as the gold standard) was 0.74. The patient was treated with a stent placed in the LAD.