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Figure 3 Lateral wall myocardial contrast enhancement using accelerated intermittent imaging during treadmill exercise stress in two different patients. The top panels show normal basal lateral segment attenuation, while the bottom panels show the dynamic images in a patient with a lateral wall contrast defect. Note that the perfusion defect in the patient with a true defect (bottom panels) extended out to the distal segment of the lateral wall, which would be uncharacteristic of attenuation. ED = end-diastole; ES = end-systole.