Fig. 5
From: Left main coronary artery morphological phenotypes and its hemodynamic properties
Description of geometric parameters of LM. LAD left anterior descending artery, LCX left circumflexus, LM left main coronary artery, RCA right coronary artery, \(D_{{{\text{LM}}}}\), distance between the endpoints of LM; \(L_{{{\text{LM}}}}\), arc length of LM; \( \alpha_{{{\text{LAD}} - {\text{LCX}}}}\), angle between LAD and LCX; \(\alpha_{{{\text{LAD}} - {\text{LM}}}}\), angle between LAD and LM; \(\alpha_{{{\text{LCX}} - {\text{LM}}}}\), angle between LCX and LM; \(\varphi_{{{\text{LM}}}}\), inscribing circle diameter of distal LM; \(\alpha_{{{\text{ostia}}}}\), LM ostial title angle; \(\varphi_{{{\text{LAD}}}}\), inscribing circle diameter of proximal LAD; \(\varphi_{{{\text{LCX}}}}\), inscribing circle diameter of proximal LCX