Explain dual energy x-ray absorptiometry (dexa), Biology

Assignment Help:

Explain Dual Energy X-ray Absorptiometry (DEXA)?

Dual energy X-ray absorptiometry (DEXA) is a relatively new technology that is being identified as a reference method for body composition analysis. This method is based on three-compartment model that divides the body into total-body mineral, mineral-free lean and fat tissue masses.

A device emits X-rays at two different energy levels and a detector measures the reduction of energy through the body. From this, bone density and soft tissue can be calculated. The values of body fat mass and lean tissue can be estimated. DEXA provides segmental and regional measures of body composition. This method can also be used for showing distribution of fat on the body.

This is a very accurate and reproducible method, has good relationship correlation with other methods. DEXA is an alternative to hydro densitometry (W) as a reference method because it is rapid (a total body scan takes 20 minutes), safe, requires minimal subject cooperation and takes into account inter individual variability in bone mineral content.

 


Related Discussions:- Explain dual energy x-ray absorptiometry (dexa)

Lentic ecosystems, Lentic Ecosystems Lakes are inland, depressions co...

Lentic Ecosystems Lakes are inland, depressions containing standing water. They vary considerably in area and depth. The largest lake in the world, the lake Superior in North

How different are the respiration in fishes, How different are the respirat...

How different are the respiration in fishes and the respiration in adult amphibians? In fishes gas exchange is completed by direct contact of water with the branchiae (gills).

Explain the use of spectinomycin in pregnancy, Use of Spectinomycin in Preg...

Use of Spectinomycin in Pregnancy  Spectinomycin (Trobicin) can be used to treat pregnant women allergic to beta-lactam antibiotics, but is unreliable against pharyngeal gonoco

Which term describes a very heart/pulse rate, In studies of human body, whi...

In studies of human body, which of the below terms is used to describe a very rapid heart rate or pulse rate? Is it: a) Tachycardia b) Bradycardia c) Cardiosis d) Myoc

Define observation for benedict test - carbohydrates, Define Observation fo...

Define Observation for Benedict Test - Carbohydrates? An insoluble reddish brown precipitate of cuprous oxide will be obtained. This is similar to Fehling's test. The reddis

Widal test is used for the diagnosis, Widal test is used for the diagnosis ...

Widal test is used for the diagnosis of: 1. Malaria 2. Pneumonia 3. Tuberculosis 4. Typhoid Typhoid

Understanding behaviour of diabetic patients, Q. Understanding Behaviour of...

Q. Understanding Behaviour of diabetic patients? Beliefs  Each of us has a set of beliefs that were learned by us when we were young. These include religious beliefs and

Pyruvate dehydrogenase complex, Pyruvate Dehydrogenase Complex The Pyru...

Pyruvate Dehydrogenase Complex The Pyruvate Dehydrogenase Complex (PDC) is one of the single central enzymes of aerobic metabolism. After completion of this animation you shoul

What devices used for oxygen therapy, What Devices Used for Oxygen Therapy?...

What Devices Used for Oxygen Therapy? Variable performance systems: With these devices, the FiO 2 would vary depending on the patient's breathing pattern. In general, rapid, s

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd