Fig. 2

Schematic overview of the image segmentation. Subendo- and subepicardial contours (green) define the leftventricular myocardium which is devided into eight equiangular sectors (white lines). Regions of interest (ROI) were placed in the blood pools for extraction of the arterial input function necessary for the absolute quantification of myocardial blood flow. Blood pool ROIs were also used for partial volume correction