Figure 3

AHA bull’s eye model according to standard segmentation for regional perfusion analysis. Based on this model, segmentation of the LV on myocardial first-pass perfusion images included the following: (A) Basal segments; (B) Mid-ventricular segments; and (C) Apical segments. The first-pass perfusion values including upslope (a), MaxSI (b), and TTM (c) were automatically obtained by signal intensity-time curve derived from myocardial perfusion images (D). Abbreviations: MaxSI, Max signal intensity. TTM, time to max signal intensity.