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Figure 5 End-systolic myocardial contrast echocardiography images in the apical four-chamber view obtained 3 to 5 days after primary coronary stenting illustrating a subendocardial perfusion defect (arrows) in a region with akinesis at rest. The background image (left image) was obtained before contrast administration whereas the contrast-enhanced image (right image) was obtained at a pulsing interval of every eight cardiac cycles.