What Does a DEXA Scan Stand For?

It is also called a bone density scan. The result can help a clinician assess whether bones are weaker than expected and decide whether further evaluation or treatment is appropriate.

Dual-energy refers to the use of two X-ray energy levels. Comparing how the X-rays pass through bone and soft tissue allows the scanner to estimate mineral content in the bone. The test commonly focuses on areas such as the hip and lower spine, where bone strength can be clinically useful to assess.

A DEXA scan is different from an ordinary X-ray because it is designed to measure bone density rather than create a general image of an injury or body structure. It is usually a brief, non-invasive examination while you lie still on a scanning table.

Follow the imaging centre's instructions about medicines, supplements, clothing, and eating or drinking. Tell the team if you might be pregnant, recently had a test involving contrast material, or have difficulty lying flat or staying still. These details can affect the timing or preparation for the examination.

During the scan, remove items that could interfere with the image, such as some metal objects. Afterward, most people can return to their usual activities unless their clinician gives different advice. Ask when and how you will receive the report, and discuss what the result means in the context of your age, health, and fracture history.

A DEXA scan itself is not an emergency test. Seek urgent medical care for severe pain after a fall, an obvious deformity, inability to use an injured limb, or sudden loss of movement. Contact your clinician promptly if you have a new fracture, repeated falls, or concerns about a result so the underlying bone health can be reviewed.

Useful questions include: Why do I need this scan? Which body areas will be assessed? Do any of my medicines or supplements affect preparation? When should I expect the report? If bone density is lower than expected, what lifestyle measures, repeat testing, or treatments should we consider?