FIGURE 2. (A) Coronal image of 72-y-old woman with hip prosthesis. Periprosthetic infection on right side was identified (arrowheads). (B) Coronal image of 76-y-old woman with bilateral hip prostheses. Both infection (arrowhead) and loosening (arrows) were shown. (C) Coronal image of 78-y-old man with painful left hip prosthesis. Arrowheads indicate periprosthetic infection and osteomyelitis. (D) Coronal image of 76-y-old woman with bilateral hip prostheses. FDG uptake is noted only around neck of prosthesis (arrows). FDG PET diagnosis of loosening was confirmed after revision arthroplasty.