Fig. 4From: Radiomics-based discrimination of coronary chronic total occlusion and subtotal occlusion on coronary computed tomography angiographyCCTA and DSA diagrams for patients with CTO and SO. (A, B) Maximum intensity projection (MIP) and curve planar reformation (CPR) images of patients with CTO;(C, D) MIP and CPR images of patients with SO;(E, F) Digital subtraction angiography images of a patient with CTO. E shows no positive blood flow far from the occluded segment (yellow arrow); F shows the LAD distal-RCA vessel visualization with LAD-RCA reverse flow (yellow arrow). (G) Digital subtraction angiography image of a patient with SO, wherein positive flow was observed far from the stenotic segment (yellow arrow)Back to article page