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a, b 11C-acetate perfusion index, K 1, for the vastus lateralis (a) and biceps femoris (b) obtained by kinetic analysis with a three-compartment model. For each muscle, the average and range of K 1 values were obtained from an AIF derived by blood sampling (Blood), IDIF and corrected for PVE (IDIFcor). c The K 1 values obtained from blood sampling are also correlated with the corrected IDIF values. The data from each subject are identified by the same symbol across all conditions
