Lighting Up This 70 years old man had a total knee replacement 5 years ago. He came with fever. A PET/CT was done, which shows intense uptake around the knee joint with effusion and synovial thickening. The MARS MRI shows effusion with a lamellated appearance and synovial thickening, findings that are usually seen with infection. #marsmri #petct #posttkr #kneereplacement #infection #postoperativeinfection (at Picture This by Jankharia)