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)

Advice on dischargeperi operative problems, Advice on Discharge :  Patient...

Advice on Discharge :  Patients are allowed to go home on 8th or 9th day. It could be even earlier after off pump coronary artery surgery (OPCAB). They should gradually increase t

Osmoregulation in freshwater metazoans, Osmoregulation in Freshwater Metazo...

Osmoregulation in Freshwater Metazoans Freshwater and brackish water animals that are live in hypoosmotic(of lower osmotic pressure) environment and keep a hyperosmotic (of h

Adenine, Adenine is one of the four nitrogen-containing bases occurring in...

Adenine is one of the four nitrogen-containing bases occurring in the nucleotides, the building blocks of organic macromolecule group called as nucleic acids (DNA and RNA). Adenin

What is the nonhuman experimental studies, What is the Nonhuman Experimenta...

What is the Nonhuman Experimental Studies How normal brain development proceeds is essential knowledge for professionals concerned with understanding infant and young child dev

What is the most likely genotype of p1, In cats, curled ears (Cu) results f...

In cats, curled ears (Cu) results from an allele that is dominant over an allele for normal ears (cu). Black colour results from an independently assorting allele (G) that is domin

What are genetic mutations, What are genetic mutations? The Genetic mut...

What are genetic mutations? The Genetic mutations are alterations of the genetic material (compared to the normal condition of the species) involving modifications in the norma

Explain transition period from renaissance to modern period, Explain Transi...

Explain Transition Period from Renaissance to Modern Period? The transition period from the Renaissance to the Modern period produced many notable workers and much literature.

Which of following is not true regarding the immune response, Which of the ...

Which of the following is not true regarding the immune response? Answer The immune response uses chemical and phagocytic cells to destroy foreign cells. Once initiated, the immune

What is catalyzes a substrate level phosphorylation, The enzyme in the TCA ...

The enzyme in the TCA cycle that catalyzes a substrate level phosphorylation is -citrate dehydrogenase -succinate thiokinase -isocitrate dehydrogenase

Define importance of bioelectrical impedance analysis, Define Importance of...

Define Importance of Bioelectrical impedance analysis? Bioelectrical impedance analysis (BIA) is a rapid, non-invasive and relatively inexpensive method for evaluating body com

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