What is a DEXA Bone Density Scan?
DEXA stands for Dual Energy X-Ray Absorptiometry and is the most widely used test to measure bone mineral density. A dexa bone density test is more accurate than a regular x-rays or CAT scans and requires less radiation exposure. Dexa scans are now the best method of diagnosing and monitoring osteopenia and osteoporosis. The National Osteoporosis Foundation’s guidelines state that women over 65, younger post menopausal women who have any osteoporosis risk factors and aging men with any osteoporosis risk factors should be tested with DEXA scans. Using a bone densitometer, physicians can measure patient bone density and follow it over time. If the patient’s bone density is low, or decreases at an abnormally fast rate, the patient may be at risk for osteoporosis. Through changes in diet, exercise habits and/or medication, further deterioration of bone can be prevented.
