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)

Zoology, Classification of the Phylum Protozoa up to orders

Classification of the Phylum Protozoa up to orders

Human embryo, Human embryo: After fertilization the human embryo divide...

Human embryo: After fertilization the human embryo divides mitotically and develops two membranes: 1) Chorion 2) Amnion Functions of the membranes: i) Chorion : It

Camptotheca acuminata, This species is an ornamental tree in China, and has...

This species is an ornamental tree in China, and has yielded the clinically active agents topotecan, irinotecan, and 9 -aminocamptothecin, which are semisynthetically derived from

Transcribed regions, Transcribed regions The transcribed regions of the...

Transcribed regions The transcribed regions of the genes contain a number of regulatory elements that control exon splicing, mRNA transfer to cytoplasm translation, mRNA target

Show the circulatory system present in arthropods, Q. What is the kind of c...

Q. What is the kind of circulatory system present in arthropods? Do these animals have respiratory pigments and heart? In arthropods the respiratory system is open (lacunar). B

Explain avoidance of shock in nutritional care, Explain Avoidance of Shock ...

Explain Avoidance of Shock in Nutritional Care? Loss of plasma proteins lead to decrease in blood volume (hypovolemia) and lowered red blood cell volume causing a potential dan

Explain the types of carrageenan, Explain the types of Carrageenan It ...

Explain the types of Carrageenan It was first produced commercially from the red algae, Chandrus crispus, found along the northeast shores of the U.S and Canada and referred t

What are four initial stages of the embryonic development, Q. What are the ...

Q. What are the four initial stages of the embryonic development? The four early stages of the embryonic development are the blastula stage, the morula stage, the gastrula stag

Important herbaria, Q. Important Herbaria? The herbarium is a place whe...

Q. Important Herbaria? The herbarium is a place where dried and mounted specimens are stored according to any recognised system of classification. Special attention is paid tow

How do the products of meiosis i differ from of meiosis ii, How do the prod...

How do the products of meiosis I differ from those of meiosis II? In meiosis I, the offspring cells are haploid but every cell contains two copies of the chromosome because th

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