Osteoporosis is caused by bone loss. Human bones are composed of mineral salts (mainly calcium) and organic matter. During the process of human development, metabolism, and aging, the mineral salt composition and bone density reach the highest peak in young adults, and then gradually increase year by year. decline until osteoporosis occurs.
How do I know if I have osteoporosis? Measuring bone mineral density can clarify bone mineral content, effectively predict fracture risk, and is clinically used to evaluate the severity of osteoporosis.
At present, there are many kinds of instruments used to measure bone density, the most common ones are ultrasonic bone density detector and dual energy X -ray bone densitymeter, so what is the difference between these two types, and how to choose?
Ultrasonic bone density detector is an ultrasonic probe that emits ultrasonic sound beams. The sound beams penetrate the skin from the transmitting end of the probe and transmit along the bone axis to the receiving end of the other pole of the probe. The computer calculates its transmission in the bone. The ultrasound speed of sound ( S0S ) is compared with its population database to obtain the T value and Z value results, so as to obtain the relevant information of bone density through the physical characteristics of ultrasound.
The main measurement site of the ultrasonic bone density detector is the radius or tibia, which has a good correlation with the dual-energy X -ray bone densitometer.
Dual-energy X -ray bone densitometer obtains two kinds of energy, namely low-energy and high-energy X -rays, through an X -ray tube passing through a certain device . After such X -rays penetrate the body, the scanning system sends the received signals to a computer for data processing to obtain bone mineral density.
Dual-energy X -ray bone densitometry has high detection accuracy and can accurately evaluate the natural changes in bone density every year. It is the “gold standard” for clinical diagnosis of osteoporosis adopted by the International Health Organization. The charging standard is higher than that of ultrasonic bone density detectors.
In addition, the detection process of the ultrasonic bone density detector is safe, non-invasive and radiation-free, and is suitable for bone density screening of pregnant women, children, middle-aged and elderly people and other special groups. However, dual-energy X -ray absorptiometry has a small amount of radiation, so it is generally not used to measure infants and pregnant women.
an ultrasound bone densitometer and a dual-energy x -ray absorptiometry bone densitometry ? I believe that after reading the above introduction, you should have a general understanding, and you can choose according to your needs and budget.
Pinyuan Medical is a professinal manufacturer of Bone Densitometry who will keep your bone health.
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Post time: Mar-24-2023