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FIGURE 4. Single-photon-emission tomograms demonstrating delayed recovery of regional fatty acid metabolism after transient exercise-induced ischemia, termed ischemic memory. Representative stress (left) and rest reinjection (middle) short-axis thallium tomograms demonstrate a reversible inferior defect consistent with ischemic but viable myocardium. 123I-BMIPP tomogram (right) injected and acquired at rest 22 h after exercise-induced ischemia shows persistent metabolic abnormality in inferior region despite complete recovery of regional perfusion at rest, as evidenced by thallium reinjection image. (Adapted from (44).)
