Bone densitometry

http://www.umediagnostics.com/diagnostic-scans/bone-densitometry/

What is bone densitometry?

Bone densitometry, also called bone density testing, uses dual energy x-ray absorptiometry (DEXA) to determine a patient’s bone mineral density (BMD). DEXA is useful in diagnosing osteoporosis, assessing risk of fracture, and monitoring response to therapy for osteoporosis. Bone densitometry has become widely used because measuring BMD is the only method available for diagnosing osteoporosis in asymptomatic individuals, and it is the best predictor of future risk of fractures. When only routine x-rays are used to assess bone density, bone loss of 30% to 40% must occur before demineralisation is detected.

Bone density scans

• Detect low bone density before a fracture occurs.
• Confirm a diagnosis of osteoporosis if you already have one or more fractures.
• Predict your chances of fracturing in the future.
• Determine your rate of bone loss, and/or monitor the effects of treatment if the scan is conducted at intervals of a year or more.

Who should have bone density testing?

• Women after menopause – especially they had an early menopause or hysterectomy (before the age of 45).
• Men if they have low levels of testosterone (known as hypogonadism).
• People who have broken a bone after only a minor trauma (called a fragility fracture).
• People who take corticosteroid tablets (for conditions such as asthma or arthritis).
• People with a family history of osteoporosis, particularly if your mother has broken her hip.
• People with medical conditions that affect the absorption of foods, such as Crohn’s disease, coeliac disease or ulcerative colitis.
• People with medical conditions that leave them immobile for a long time.
• People who drink excessive amounts of alcohol.
• People who smoke.
• Women who are underweight or have developed an eating disorder.

Who should not have bone density testing?

Bone density testing is not recommended for individuals who:

• are pregnant;
• have had an x-ray with contrast within the last week; or
• have had a nuclear scan within the last week.

For information on how to book an appointment please see the booking and payment page, or contact your nearest centre.