A bone density The scan, still known as a DEXA scan, produces images using low-dose X-rays that detect calcium and other minerals in the bone. The measurements serve to show the strength and thickness of the bone (bone or mass density or bone mass).
Most people lose weight as they age. When bones become thinner than normal, this is known as osteopenia. Osteopenia increases the risk of developing a more serious condition called osteoporosis. Osteoporosis is a common disease that causes bones to become very brittle. Osteoporosis usually occurs in the elderly and is more common in women over the age of 65. People with osteoporosis have an increased risk of fractures (broken bones), especially in the hips, spine, and wrists.
Also known as the Bone Mineral density test, BMD test, Dexa scan, DXA; dual energy x-ray absorptiometry.
What is it used for?
A bone density scan is used to:
- Diagnosis of osteopenia (bone loss).
- Diagnoses osteoporosis
- Predicts the risk of future fractures.
- See if osteoporosis healing works.
Why do we need bones? density scan?
Most women over age 65 need to have a bone scan. density Women in this age group are at the highest risk of bone loss. density This can lead to bone fractures. May still be at risk for low bone density. density if you:
- Have a very low body weight.
- Has had one or more fractures since age 50.
- Has lost more than 0.5 inches in height in the past year.
- Must be at least 70 years of age.
- Have a history of osteoporosis at home.
Other risk points include,
- Lack of physiological activity
- Smoking cigarettes
- Heavy alcohol consumption
- Insufficient calcium and vitamin D in the diet
What Happens During a Bone Scan density scan?
There are several methods of measuring bone, density The field best known actual method uses a feature called dual x-ray absorptiometry, also known as a DEXA scan. The scan is usually performed in the radiologist’s office.
During the DEXA scan:.
- Lie on your back on a flexible table. You may forget your own clothes.
- You may be asked to lie with your legs straight out, or you may be asked to place your feet on a smooth table.
- The scanning machine will pass over your waist and thighs. At the same time, another scanning machine, a photon generator, runs beneath you; images from the two machines are linked and sent to a computer. Your health care provider reviews the images on the computer screen.
- You must remain relatively still while the machine scans. You may be asked to hold your breath.
To measure bone density In the forearm, finger, hand, or leg, caregivers have the option of using a miniature scanner known as a peripheral DEXA scan (P-DEXA).
Need to prepare for the test?
You should stop taking calcium supplements 24-48 hours prior to the test. In addition, do not wear iron jewelry or clothing with metal parts such as buttons or buckles.
Was there any danger in the test?
A bone density The scan contains fairly low doses of radiation. It is not dangerous for most people. However, it is not recommended for pregnant women. Even low doses of radiation can damage the fetus. Tell your doctor if you are pregnant or think you are.
What do the results mean?
Bone density Results are often given in the form of a score. t Score is a measurement that links bone measurements density at a healthy 30 year old bone. density from a healthy 30 year old. A low score means that you are probably losing bone.
Your score could indicate one of the following
- T-scor e-1, 0 or higher. This is normal bone density .
- A T-score o f-1.0 t o-2.5. This means you have low bone density density (osteopenia) and possibly at risk for osteoporosis.
- A t-score o f-2.5 or less. This means you probably have osteoporosis.
If your results indicate that you have low bone density. density Your doctor will suggest steps to prevent further bone loss. These can be
- Get more exercise with activities such as walking, dancing, and implementing weight machines.
- Add calcium and vitamin D to your diet
- Take prescription medications to build bone density
Talk to your own care provider if you have questions about your results or the treatment of bone loss.
What else should I know about BOT? density scan?
Dexa scans are a more well-known way to measure bone. density Your care provider can order more tests to prove the diagnosis or to find out if bone mass cost healing is working. These include blood tests for calcium, vitamin D testing, and/or testing for certain hormones.
Delivered by MedlinePlus from Staatsbibliotheek for Medicine.
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