Fig. 1D —65-year-old woman with morbid obesity and chronic decubitus ulcer on her sacrum who was referred for 18F-NaF PET/CT to evaluate for osteomyelitis.D, Fluorine-18-NaF PET/CT (D) and PET/MRI (E) show focal hypermetabolism involving left calcaneus (arrow, D and E) corresponding to sclerosis on low-dose CT image (arrow, F), consistent with calcaneal stress fracture.Read More: https://www.ajronline.org/doi/full/10.2214/AJR.17.18523