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Services & Specialities

Bone Densitometry (DEXA)

Also known as Dual Energy X-ray Absorptiometry or DEXA, bone mineral densitometry is the technology used to measure and monitor changes in bone density. The gradual loss of density weakens the bones and leads to fractures. This condition is called osteoporosis. Many factors such as dietary habits and family history contribute to the development of this disease. A bone densitometer can let patients know whether or not they have osteoporosis or if they are at risk for developing the disease.

How a bone densitometer works:

The patient is required to lie down on an examining table where a DXA source of two low-dose x-rays measure the bone density of the fracture prone areas. The bone densitometer accurately and quickly measures the patient's bone mineral density (BMD). This test also gives a comparison of the results against a reference population based on age, weight, sex, and ethnicity. The resulting information is then sent to the patient's doctor so s/he can make a decision about treatment or prevention.

What will I experience during and after the x-ray procedure?

Bone density tests are a quick and painless procedure.

Who interprets the results and how do I get them?

A radiologist, a physician specifically trained to supervise and interpret radiology examinations, will analyse the images and send a signed report to your primary care or referring physician, who will share the results with you.

Your test results will be in the form of two scores:

T score - This number shows the amount of bone you have compared with a young adult of the same gender with peak bone mass. The T score is used to estimate your risk of developing a fracture.

Z score - This number reflects the amount of bone you have compared with other people in your age group and of the same size and gender. If this score is unusually high or low, it may indicate a need for further medical tests.