DEXA | Bone Density Scan
A DEXA scan, also called a bone density test or a bone densitometry, measures the mineral content of the bones in certain areas of the skeleton, such as the hip, spine and/or wrist. It is a way to measure bone loss as a person ages.
DEXA scans are often used to help diagnose osteoporosis, a condition that weakens bones and increases the risk of fractures. As you age, your bones can lose thickness and strength. Osteoporosis results when you lose bone faster than your body can create new bone tissue. This is most common in postmenopausal women. Over time, bones get weaker, and brittle bones break more easily.
DEXA scan can also be used to diagnose osteopenia, a term used to describe low bone mass. Many individuals, including those who are slender and very active, have lower bone mass all of their lives, but this does not necessarily mean that they will develop osteoporosis.
DEXA uses very low levels of X-ray and medical experts consider DEXA to be the most useful, easy and inexpensive test for helping diagnose osteoporosis.
Who is DEXA Scan For?
DEXA scan is generally recommended for the following:
- Increased age – The National Osteoporosis Foundation recommends people at average risk get a DEXA scan starting at age 65 (women) and 70 (men).
- Family history – If one or more family members have had osteoporosis or more than one fracture, you could be at higher risk for bone loss.
- Previous fracture injuries – Breaking a bone, especially after age 50, may be a sign that you are at greater risk.
- Medications – Some medications, such as the steroid prednisone, cancer drugs and drugs used after an organ transplant, can weaken your bones.
- Your overall health – Many chronic medical disorders can make your bones more likely to break. These conditions include rheumatoid arthritis, lupus, diabetes, liver disease and kidney disease.
