....rest images (inferior wall, septum, apex), improved perfusion on stress images with persistent defect at the apex - fixed apical defect consistent with infarct scar, apical akinesia.....It seems the tests (1 and 3) indicate a prior myocardio infraction (heart attack) and heart cell necrosis (not viable).
Your ejection fraction is within the normal range (normal is 50-70%) and indicates your heart's contractility strength has the ability to pump 59% of the heart's filling capacity.