DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Dual Energy X-ray Absorptiometry (DEXA) scan of a 68 year old female patient's left hip, with accompanying report. The scan is used to assess a patient's bone mineral density (BMD). DEXA scans are often used after menopause (cessation of menstruation), as osteoporosis (brittle bone disease) becomes more likely. A computerized report is generated, which compares the density of the patient’s bones to that of the average for her age (a result known as the Z-score) as well as to that of an average woman at peak bone density (the T-score, graph at bottom left). The results here indicate that the patient is at a high risk of osteoporosis.
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