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Figure 3 Positive and negative predictive values in assessing recovery of asynergic regions after revascularization are shown in relation to the magnitude of absolute blood flow, late 13N-ammonia uptake, FDG uptake, and thallium uptake (maximum on either redistribution or reinjection). When 13N-ammonia uptake and FDG metabolic data were combined, none of the asynergic regions demonstrating uptake of less than 50% on both 13N-ammonia and FDG images showed improvement in systolic wall thickening after revascularization (negative predictive accuracy of 100%).
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