Dual Energy X-ray Absorptiometry (DEXA) is an X-ray test that measures bone thickness.  It is used to see if your bones are getting thin and brittle, which means they could break more easily.  The results of the test may show that you need treatment for osteoporosis.

How does a DEXA scan work?

DEXA uses two different X-ray beams to estimate bone density in your spine and hip. Strong, dense bones allow less of the X-ray beam to pass through them.  The amounts of each X-ray beam that are blocked by bone and soft tissue are compared to each other.

Safety in Imaging

At Intermountain Healthcare, our goal is to use the least amount of radiation (X-ray energy) needed to produce quality images.  We work hard to make sure our equipment is safe and appropriate for your test.  Our imaging teams have regular training on radiation safety.  We communicate with doctors to help them choose imaging tests wisely.
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