Figure 1. Temporally correlated ³¹P NMR spectra and radiotracer (¹⁸F-fluorodeoxyglucose, FDG) uptake data acquired from an isolated perfused rat heart. Changes in both the NMR and PET data are recorded simultaneously as the heart changes from normoxic (A) to hypoxic (B) and then becomes normoxic again (C). The radiotracer uptake data were acquired using a simple non-imaging gamma-ray detector.

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