DEXA Scans
The Gold Standard for Bone Density
DEXA scans, short for Dual-Energy X-ray Absorptiometry, are a specialized type of X-ray imaging technique primarily used to measure bone density and assess the risk of osteoporosis. By measuring the amount of X-ray energy absorbed by the bone, DEXA scans can accurately determine bone mineral density. This information is crucial in diagnosing osteoporosis. DEXA scans are quick, non-invasive, and produce highly precise results. Additionally, DEXA scans are also used in assessing body composition.
What to Expect
01
Check In
Arrive 15 minutes early for registration. The technologist records your height and weight, and you'll remove your shoes and change into a gown if your clothing contains metal.
02
The Scan
You'll lie on top of an imaging table as the scanner passes over your body — there's no enclosed tunnel, and the scan is completely noninvasive. It takes about 10 to 30 minutes.
03
Results & Follow-Up
A written diagnostic assessment is faxed to your referring physician the same day, and your results are also available on the patient portal to discuss with your provider.
How to Prepare
Avoid calcium supplements for 24 hours before your scan, and wear comfortable clothing without metal embellishments. DEXA scans should not be performed on pregnant patients, or on anyone who has had a radiologic exam with barium or a contrast injection within the past seven days.
Conditions Detected
DEXA (Dual-Energy X-ray Absorptiometry) measures bone thickness and strength to assess osteopenia, osteoporosis, and fracture risk, commonly examining the spine, hip, and forearm. It’s also used for body composition assessments, providing baseline measurements of lean muscle mass, visceral fat, bone density, and body symmetry to track progress over time.
FAQ
Who should get a DEXA scan?
Your provider may recommend a DEXA scan based on increased age (post-menopausal women, women over 65, or men over 70), family history of osteoporosis, a previous fracture after age 50, certain medications like steroids or immunosuppressants, or chronic conditions such as rheumatoid arthritis, lupus, diabetes, or liver or kidney disease.
Does a DEXA scan use radiation?
Yes, but a very small dose — about 0.001mSv, equivalent to roughly three hours of natural background radiation or less than a one-hour flight.
What is a body composition scan?
DEXA imaging can also provide a full body composition assessment, offering baseline measurements for weight management including lean muscle mass, visceral fat, bone density, and body symmetry to track your progress over time.
Who shouldn't have a DEXA scan?
DEXA scans should not be performed on pregnant patients, or on anyone who has had a radiologic exam with barium or a contrast injection within the past seven days.