Fig. 1From: PET/MRI reveals ongoing metabolic activity in ACL grafts one year post-ACL reconstructionTime course of PET uptake following ACL reconstruction. Whole knee PET uptake regions of interest in non-operative (left) and operative (right) knees 3 months, 6 months, and 12 months post-operatively from a single representative patient. Images are taken from axial (top), sagittal (middle), and coronal (bottom) planes centered on the ACL. Increased 18F-FDG uptake is indicated by a shift from blue to redBack to article page