What is the uses of pet scans- brain function, Biology

Assignment Help:

What is the uses of PET scans- Brain function

PET scans provide colour-coded images of person's brain as they undertake different sorts of task, such as reading words, solving mental arithmetic and listening to music. The technique relies on the fact that active neurons use more glucose (fuel), so, shortly before the scan; a small amount of radioactively labelled glucose is given to the participant by injection, some of which will be taken up by active neurons. Several different radioactive markers are now available; some have longer or shorter half-lives; others may have specific targets in the brain. A commonly used isotope is oxygen 15, which has a half-life of about 2 minutes. This means it can only be used for relatively brief scanning periods so repeated administration will be necessary in complex or lengthy studies. As it decays it gives off gamma rays that are detected by the PET scanner, and activity level of different regions of the brain can be assessed.

 


Related Discussions:- What is the uses of pet scans- brain function

Define requirements of protein during surgery, Define Requirements of Prote...

Define Requirements of Protein during Surgery? Negative nitrogen balance is the most common nutritional deficiency related to surgery. Reserves of protein in the tissues and pl

Acid rain, The Phenomenon of acid rain was first introduced by Rober Angus ...

The Phenomenon of acid rain was first introduced by Rober Angus smith in 1852. Is means presence of excessive acids in rain water? Acid rain is a form of precipitation (rain, sn

Explain lock and key model, Fischer 's template or lock and key model ...

Fischer 's template or lock and key model According to this model, the catalytic site of the enzyme has a proper conformation compatible to a specific substrate even  in  the a

Aba - dormancy, ABA - Dormancy Abscisic acid functions as an antagonis...

ABA - Dormancy Abscisic acid functions as an antagonist of all three promoters like IAA, GAS and Cytokinins. ABA nullifies the activity of GA, IAA and cytokinin right by a)

Describe imz implant system, Q. Describe IMZ Implant System? Then came ...

Q. Describe IMZ Implant System? Then came the IMZ Implant System (Interpore IMZ) in 1974. The major difference between the IMZ System and all other relevant implant systems is

Explain the term antioxidants, Normal 0 false false false ...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Observation or inference for half and full saturation test, Define Observat...

Define Observation or Inference for half and full saturation Test? 1. Starch is precipitated by half saturation with ammonium sulfate whereas dextrin is not precipitated. This

Skeletal tissue - bone, BON E - Bone is the hardest tissue in the ...

BON E - Bone is the hardest tissue in the body and supports various organs. The inorganic salts present in the matrix are calcium phosphate, calcium carbonate, calci

Define the viscosity of protein, Define the Viscosity of Protein? Visco...

Define the Viscosity of Protein? Viscosity reflects resistance to flow. The main single factor influencing the viscosity behavior of protein fluids is the apparent diameter of

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