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Positron Emission Tomography (PET) images of directly radiolabeled with 18FDG cardiac derived stem cells (red) injected in the infarct area of rats, at 1hr post cell injection. 13NH3 (green) was used as perfusion tracer to delineate normally perfused myocardium. In vivo PET images are co-registered with CT images, for better anatomic detail and attenuation correction. (A: transverse image orientation, B: coronal, C: sagittal).
