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Figure 1 Representative stress only short-axis (SA) (upper three panels) and vertical long-axis (VLA) (lower three panels) tomographic images of a patient before therapy (baseline) and at week 4 and week 8. The corresponding quantitative polar maps are shown on the right. The adenosine-induced ischemic anterior perfusion defect improves dramatically from baseline to week 4 and 8 as reflected by a reduction in perfusion defect size (PDS) from 26% to 17% to 6%. The ischemic (green) area of the polar map resolves, whereas the scarred region (black) remains unchanged over the eight-week period.