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 the functions of vitamin e, Define the Functions of Vitamin E? V...

Define the Functions of Vitamin E? Vitamin E is the major lipid-soluble antioxidant in the cell antioxidant defence system and is exclusively obtained from the diet. The main r

Muscles, what process provides the energy for muscle contraction?

what process provides the energy for muscle contraction?

How is the early diagnosis of genetic diseases usually done, How is the ear...

How is the early diagnosis of genetic diseases usually done? The Genetic disease may be diagnosed in the prenatal period by karyotype analysis, in case of aneuploidies, or by D

Joints, JOINTS - The structural arrangement of tissues which connect 2 ...

JOINTS - The structural arrangement of tissues which connect 2 or more bones together at their place of meeting is called a joint. Study of joint is arthrology. Joint make the

Define the term epimerism, Define the Term Epimerism? In addition to D ...

Define the Term Epimerism? In addition to D and L isomerism sugars also exhibit epimerism. Hexoses that differ from each other as a result of variation of H and OH on carbons 2

How does the Cornea work, How does the Cornea work, I heard that it is like...

How does the Cornea work, I heard that it is like a motor, however i''m not too sure... because a motor is in vehicle and has piston, and the Cornea is in our eyes and... Well does

Artificial kidney, ARTIFICIA L KIDNEY - Dialysis employs the process o...

ARTIFICIA L KIDNEY - Dialysis employs the process of diffusion across a semipermeable membrane to remove unwanted urea . Dialysis is of 2 types - 1. Haemodialysis -

Photoperiodism was first characterised, Photoperiodism was first characteri...

Photoperiodism was first characterised in : 1. Tobacco 2. Potato 3. Tomato 4. Cotton Tobacco is the first in whic photoperiodism characterised.

Explain class adverse effects of nnrti, Class adverse effects of NNRTI ...

Class adverse effects of NNRTI All NNRTIs can cause a rash that is sometimes severe. NNRTIs are metabolized by and can affect hepatic CYP 450 isozymes; drug interactions can o

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