What is ultrasound bone densitometer?
What is ultrasound bone densitometer?
The NTD is defined as the difference between the transit time through the heel of an ultrasound signal and the transit time through a hypothetical object of equal thickness (to the heel) but containing soft tissue only.
What is Hologic Discovery?
The Hologic Discovery DXA system enables you to identify patients at risk for osteoporosis and other debilitating conditions. Delivering exceptional precision and pinpoint accuracy, Hologic Discovery DXA technology delivers high quality images for your at-risk patients. About+
What is the purpose of bone densitometer?
Bone densitometry, also called dual-energy x-ray absorptiometry, DEXA or DXA, uses a very small dose of ionizing radiation to produce pictures of the inside of the body (usually the lower (or lumbar) spine and hips) to measure bone loss.
Can ultrasounds detect osteoporosis?
A heel ultrasound result in the osteoporotic range was highly predictive of BMD-defined osteoporosis. A positive ultrasound heel test in high risk patients is more useful in ruling in osteoporosis than a negative test to rule out osteoporosis.
What do T scores mean?
Your T-score compares your bone mass to that of a healthy young adult. The “T” in T-score represents the number of standard deviations, or units of measurement, your score is above or below the average bone density for a young, healthy adult of your same sex.
How is a DEXA scan done?
When you have a DEXA scan, you will not need to go into a tunnel or have an injection. Instead, you lie on your back on a flat, open X-ray table. You’ll need to keep very still during the scan so the images are not blurred. The scan will usually be carried out by a radiographer, a specialist in taking X-ray images.
What is the meaning of DEXA?
It uses very low levels of x-rays to measure how dense your bones are. DEXA stands for “dual-energy X-ray absorptiometry.” Medical experts consider DEXA scans to be the most useful, easy, and inexpensive test for helping to diagnose osteoporosis. The test is quick and painless.
Why would a doctor order a bone scan?
A doctor may order a bone scan to: identify bone cancer. determine whether cancer from another part of the body has spread to the bones. locate hidden bone fractures that do not appear on X-rays.
Is a bone density test painful?
A bone density test is like an x-ray or scan of your body. The test doesn’t hurt, and you don’t need to do anything to prepare for it. It only takes about 15 minutes.
How accurate are bone density scans?
A BMD test measures your bone mineral density and compares it to that of an established norm or standard to give you a score. Although no bone density test is 100-percent accurate, the BMD test is an important predictor of whether a person will have a fracture in the future.
What can I expect from a bone density scan?
A bone density scan is a quick and painless procedure that involves lying on your back on an X-ray table so an area of your body can be scanned. No special preparations are needed. You may be able to remain fully clothed, depending on the area of your body being scanned.