Fig. S1—Cardiac CT perfusion 17-segment model and 19-segment coronary artery segment model.
A and B, Drawings show left coronary artery (LCA) (A) including three possible obtuse marginal branches (12A, 12B, and 12C), which is different from original American Heart Association coronary segmental model [21]. Right coronary artery (B) is unchanged from original American Heart Association model. AC = distal circumflex, AM = acute marginal, CB = conus branch, Circ = left circumflex, LAD = left anterior descending, OM = obtuse marginal, PD = posterior descending, PL = posterolateral, RCA = right coronary artery, RPD = right posterior descending, SN = sinus nodal. (Reprinted with permission from Austen WG, Edwards JE, Frye RL, et al. A reporting system on patients evaluated for coronary artery disease: report of the Ad Hoc Committee for Grading of Coronary Artery Disease, Council on Cardiovascular Surgery, American Heart Association. Circulation 1975; 51(4 suppl):5–40)
C, Drawing shows CT perfusion segmental model.