Abstract
Pre- and post-CABG perfusion scintigraphic findings are reported in a patient with residual ischemia after anterior myocardial infarction. The preoperative 201Tl scan showed incomplete tracer redistribution and a relevant area of persistent irreversible defect, suggestive of a large scar. After CABG, the presence of a virtually normal early thallium distribution demonstrated previous underestimation of the viable perinecrotic tissue. A persistent perfusion defect, even if associated with wall motion abnormality, does not necessarily imply the absence of residual viable tissue.
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