title: Usefulness of SPECT in the early detection of avascular necrosis of the knees.
abstract: Single photon emission computerized tomography (SPECT), was performed on a female with an acutely painful knee. She had been on corticosteroids just before the onset of symptoms. Radiographs and planar scintigraphic views of the knees were unremarkable. SPECT images of the knees were instrumental in the diagnosis of avascular necrosis of the knee. The cases illustrates the usefulness of SPECT in the early detection of avascular necrosis of the knees.
mesh_terms: D000293:Adolescent; D005260:Female; D006801:Humans; D007717:Knee / Q000000981:diagnostic imaging; D010020:Osteonecrosis / Q000000981:diagnostic imaging*; D014055:Tomography, Emission-Computed