Figure 216-9

Patterns of MBF and glucose metabolism (with [S13N]ammonia, 8F]deoxyglucose, and PET) in three patients with ischemic cardiomyopathy and poor LV function. Only vertical long-axis cuts through the mid-left ventricle are shown. Patient A demonstrates an enlarged LV cavity with a mild decrease in perfusion in the anterior wall apex, and distal inferior walL Glucose metabolism parallels the distribution of MBF ("mild match"). In patient B, a severe perfusion defect in the akinetic anterior wall is matched on the glucose metabolic images by a decreased uptake of [S18F]deoxyglucose (severe "match" pattern). In contrast, in patient C, the extensive perfusion defect in the anterior wall and apex is associated with near normally preserved [S18F]deoxyglucose uptake ("blood flow metabolism mismatch").

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