DEXA Body Composition scans, like those offered at UVA Health, are non-invasive procedures that offer benefits to many types of patients. Continue reading to learn more about DEXA and whether it could be right for you.
Article Reviewed by Dr. Michael Perry
What is a DEXA Body Composition scan?
DEXA, or DXA, stands for Dual-Energy X-ray Absorptiometry scan. The technology uses dual low-power x-ray beams that can differentiate between muscle, fat, and bone. The procedure is non-invasive, it does not require anesthesia, and it is performed on an open table.
After your scan, you will receive a detail report of findings compiled by a Musculoskeletal Radiologist.
What will a DEXA Body Composition scan tell me?
A DEXA Body Composition scan can provide information on different aspects of one’s body, including but not limited to the following:
- Total Body Fat Percentage – details the percent of the body that is composed of fat.
- Visceral Adipose Tissue (VAT) Area – reflects the amount of internal abdominal fat around one’s organs. Increased VAT has been correlated to higher risk of cardiovascular and metabolic disease.
- Appendicular Lean Mass to Height Ratio (also referred to as ALMI) – reflects the amount of lean mass (bone + muscle) in the arms and legs relative to height. This provides an estimation of skeletal muscle. Low ALMI is a risk factor for sarcopenia which has been correlated with poor long term health outcomes.
- Lean Mass to Height Ratio or Free Fat Mass Index – the amount of mass that is not fat, relative to one’s height. Similar to ALMI but also includes visceral organs in measurements so may not be as accurate in representation of sarcopenia in some patients.
- Whole-Body Bone Density – the average bone density for one’s entire skeleton. While this type of DEXA scan is not used for diagnosis of osteopenia or osteoporosis, low whole body bone density may indicate a need for further testing.
A sample reading of a DEXA scan, which can provide information on different aspects of one’s body and may be useful to anyone who wants to improve their overall health.
Who can benefit from a Body Composition scan?
A DEXA scan can benefit a wide range of patients – in fact, its findings may be useful to anyone who wants to improve their overall health.
You may benefit in particular from a DEXA Body Composition scan if you are a patient who:
- Are interested in information for weight-loss goals
- Are an athlete undergoing or planning to undergo a targeted training program
- Are monitoring fitness and/or dietary changes
- Has an increased risk for visceral fat around organs
Booking a DEXA scan at UVA Health
To get started on a DEXA scan at UVA Health, you’ll first need an order for “DEXA Body Composition” from your doctor.
Once your doctor has provided the order, you can call UVA Imaging at (434) 270-0359 to schedule your appointment.
