Sample T1 relaxation measurements (symbols) and best Bloch equation model fits (lines) for non-selective (NS) and slice-selective (SS) inversions at baseline (A), with ATL313 (B), and in remote (C) and infarcted (D) myocardium 1 day post-MI. The shift between NS and SS T1 relaxation data depends on tissue perfusion. Relative to baseline (A), that shift increases in response to vasodilatation with ATL313 (B), is unchanged in the post-MI remote zone (C), and decreases in infarcted myocardium (D).