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A DEXA bone density scan or ‘dual-energy X-ray absorptiometry’ is a non-invasive, painless, and cutting-edge image diagnostic test conducted to determine your bone mineral density and to ascertain the extent of bone loss. 

The results of the DEXA scan help orthopaedics confirm the presence of or the risk of osteoporosis and fractures. 

The DEXA bone density test helps in determining your bone strength and how susceptible you might be to fractures and a host of bone disorders.

This bone image test is primarily conducted on the hips and the spine, two of the most vulnerable skeletal structures of the body. 

The DEXA bone scan is a quick image testing procedure that takes about 10 to 20 minutes and is an outpatient procedure, meaning you can go back home the same day. 

This bone scanning technique is much more efficient than a regular X-ray as it uses two X-ray beams, a high energy beam and a low energy one. 

The results of the DEXA bone scan are denoted as T-score. This scoring system takes the bone health of a 30-year-old as a benchmark, as the bones are strongest at this age. 

The higher the score, the stronger the bones and vice versa. Here’s what the T-score values look like:

T-Score Value


-1.0 or above

Normal bone density

-1.0 to -2.5

Low bone density

-2.5 or lower

Osteoporosis or high fracture risk


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Frequently Asked Questions about TMT Test

A DEXA scan is conducted to evaluate your bone density or the strength of your bones. This image diagnostic test provides a comprehensive insight into your bone health and assesses the risk degree of getting osteoporosis and fractures.

Unlike conventional X-ray tests, the DEXA bone density scan uses significantly less amount of radiation, thus making it a very safe procedure.

A DEXA bone density scan is well-known for its high degree of accuracy and precision and is widely considered to be one of the best imaging methods to diagnose osteoporosis.

No. The DEXA scan does not indicate the presence of arthritis. However, measuring your bone density can be a vital tool to diagnose osteoporosis or to determine how much at risk are you at getting this bone disorder.

No. A DEXA bone density scan cannot confirm the presence of tumours. However, it can provide vital information that can help your doctor prescribe additional tests to confirm tumours.

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