Bone density measurement (DEXA)
DEXA or DXA stands for dual-energy X-ray absorptiometry and is a method for determining bone density. This procedure is primarily used in the diagnosis of osteoporosis, but is also used for other bone diseases. In pediatric radiology, for example, DEXA is used for the diagnosis of oesteogenesis imperfecta (OI), a hereditary disease of bone formation. The use of DEXA in OI has been researched here in Cologne and, among other things, ensures lower radiation exposure than conventional X-ray diagnostics.
For bone density measurement, our institute has the latest high-end system of the latest generation (GE HealthCare Lunar iDXA). This device not only enables the precise diagnosis of osteoporosis and osteopenia, but also the supplementary analysis of bone microarchitecture using the Trabecular Bone Score (TBS). It also allows a detailed whole-body analysis of body composition including muscle, fat and bone. The examination is carried out with very low radiation exposure, high measurement accuracy and short scan times.
Frequently asked questions
How can I prepare for the examination?
Please do not take any calcium preparations or calcium supplements for at least 24 hours before the examination, otherwise no special preparations are necessary for this examination. The examination is painless and not stressful. The DEXA examination is also suitable for patients with claustrophobia, as it takes place on an open examination table.
How does the examination work?
The examination is carried out in the supine position on the examination table. The device moves gradually over the areas of the body to be examined. The radiation exposure is much lower than with a conventional X-ray examination. Depending on the type and scope of the examination, it takes around five to 15 minutes.
Further information
- Read more about our equipment and the DEXA procedure here
- Musculoskeletal imaging as a focus at the institute
- Research in musculoskeletal imaging