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Techniques to study the brain can be largely categorized into two groups: those that elucidate the brain's structure and those that analyze brain activity. Methods used to study the brain's structure include computed axial tomography (CAT) scans and magnetic resonance imaging (MRI).
Good For: Studying the relative metabolic activity of various body regions; full body scans are used to find cancer metastases (more cell division = higher average metabolism), brain scans are used to measure relative activity of different brain regions to look at things like normal brain vs Alzheimer's vs cancer vs etc.
The answer choices are: A) a PET scan. B) MRI. C) a CT Scan. D) X-ray. I was able to eliminate D because that didn't make any sense to me, but I picked B and got it wrong. The correct answer is A and I'm not sure why. How would I be able to discern between the two on the test?
Can someone help me out with the different types of brain scans? (MRI, fMRI, CAT, PET). Having some difficulty distinguishing what scans are used in…
• Neuroimaging, or brain scanning, includes the use of various techniques to either directly or indirectly image the structure, function, or pharmacology of the brain. • Neuroimaging falls into two broad categories: structural imaging and functional imaging.
For more in-depth content review on the different brain imaging techniques, check out these detailed lesson notes created by top MCAT scorers.
