Bone Densitometry (DEXA)
**Bone Densitometry** or **DEXA (Dual Energy X-ray Absorptiometry)** is a specialized imaging method that measures bone mineral density to assess bone strength and fracture risk. It is considered the gold standard for the diagnosis of osteoporosis (bone loss).
What are its features?
- Measures bone mineral density with a high degree of precision.
- Is a reliable and standardized method for diagnosing osteoporosis.
- Uses a very low dose of X-rays.
- Is a fast, painless, and non-invasive procedure.
- Measures can be performed on the spine, hip, and, when necessary, the forearm.
- Allows monitoring of bone loss and treatment progress.
- Provides comparative evaluation through digital measurement and reporting.
- Risk analysis can be performed based on age and sex.
In which cases is it used?
- Diagnosis of osteoporosis and osteopenia
- Assessment of bone density in postmenopausal women
- Routine screening for individuals over 65 years of age
- Patients using corticosteroids or certain hormone medications for an extended period
- Individuals with a family history of osteoporosis or fractures
- Unexplained bone fractures
- Bone monitoring in thyroid, rheumatic, and metabolic diseases
- Monitoring treatment response in patients receiving osteoporosis treatment
- Body fat and muscle mass measurement and monitoring for individuals following a diet and exercise program
How is it performed?
During a Bone Densitometry examination, the patient lies on their back on the examination table. Measurements are generally taken from the lower back and hip areas. The device measures bone density while the patient is asked to remain still. The examination takes approximately 5–10 minutes and is painless.
We have compiled the most frequently asked questions about Bone Densitometry (DEXA) for you. Here, you can find answers to questions regarding this method—used to measure bone density and assess the risk of osteoporosis—covering everything from the scanning process and preparation to who should undergo the test and how the results are interpreted.
Bone densitometry is an imaging method used to measure bone mineral density. Using DEXA (Dual-Energy X-ray Absorptiometry) technology, the strength of the bones can be assessed and the risk of osteoporosis can be determined.
A DEXA test is generally performed in individuals suspected of having osteoporosis, postmenopausal women, people who have used corticosteroids for a long time, or individuals at high risk of bone fractures.
The patient lies on the examination table, and the lower back and hip areas are usually scanned. Bone density is measured using low-dose X-rays, and the results are analyzed digitally.
A bone densitometry examination is usually completed within 10–15 minutes. The procedure is quick and painless.
In most cases, no special preparation is required. However, you may be asked to remove metal accessories on the day of the examination, and in some cases, you may be advised not to take calcium supplements before the scan.
A DEXA test uses a very low dose of X-rays. Therefore, it is considered a safe method and can be performed comfortably on many patients.
Bone density is evaluated using values such as the T-score and Z-score. These values indicate whether bone density is normal, low, or at a level consistent with osteoporosis.
After the scan, the obtained data is evaluated by a radiologist, and a report is prepared. The results are usually provided to your doctor within a short period.