Values are compared to others of the same age and gender (Z-scores) or healthy young adults at peak bone mass (T-scores).įor post-menopausal women and men age 50 and over, the result of DXA is based on T-scores: What do my DEXA scan bone density test results mean?ĭXA bone mineral density for different sites on the skeleton is reported as grams per centimeter squared (gm 2) – measuring the amount of calcium and other bone materials packed in to a segment of bone. You may be asked to hold your breath during the scanning, ensuring that you lie very still so that motion artifact does not interfere with the images the technologist and radiologist evaluate on the computer screen. Other facilities may use a separate scanner to evaluate the wrist. At HSS, the wrist is scanned with the same machine while you are seated next to the machine. A scanner will pass over your lower spine and hip while another scanner passes beneath you. ![]() Legs may be straight or positioned on a padded platform. Metal jewelry (for example, belly button piercings) and clothing with metal fasteners (zippers, buckles, hooks) should be avoided.įully clothed, you will lie flat on your back on a padded table. You will be asked to stop taking calcium supplements 24 to 48 hours before the scheduled DXA exam (different facilities have different guidelines).
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