Women's Imaging Center
Bone Density Testing (DEXA SCAN)
Bone Density Testing (DEXA SCAN)
Physicians typically use x-rays to view and evaluate bone fractures and other injuries of the musculoskeletal system. However, a regular x-ray test is not the best way to assess bone density. To accurately diagnose osteoporosis (loss of calcium in the bones), we use an enhanced form of x-ray technology called dual-energy x-ray absorptiometry (DEXA).
DEXA is a quick, painless procedure that takes less than 30 minutes. The DEXA scanner has a large, flat table and an "arm" suspended overhead. As you lay on the table, the arm of the scanner moves over your body and sends a small beam of low-dose x-rays with two different energy peaks through your bones. The amount of radiation used is very small—less than one-tenth the dose of a standard chest x-ray. One peak of radiation is absorbed by soft tissue and the other by the bone. Your bone density is determined by analyzing the absorption of these two areas. A radiologist (physician) will analyze the images and report the results to your physician.
If you are having a DEXA scan, please follow your physician's orders prior to your appointment. If you do not follow the orders, your exam may have to be delayed or rescheduled.
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