Quantitative PET for Stenosis Severity and Determining Procedures
(A) Topographic 3-D displays of PET relative perfusion in 90° quadrants from left lateral, to inferior, septal (right), and anterior views, scaled as for Figure 1. (B) Absolute myocardial perfusion in cc/min/g at rest, with dipyridamole stress and CFR as scaled by the color bar for 4 × 4 pixel sample volumes throughout the left ventricle. The quantitative image is displayed in square quadrants delineated by the large square grid lines for semiautomated processing into cc/min/g or CFR. To avoid partial volume errors biasing average quadrant values, the apical region and the region of the membranous septum above the upper and lower horizontal grid lines are excluded from average quadrant values. ANT = anterior; INF = inferior; LAT = lateral; SEP = septal; other abbreviations as in Figure 1.