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POSITRON EMISSION TOMOGRAPHY!!!!
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POSITRON EMISSION TOMOGRAPHY!!!!
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POSITRON EMISSION TOMOGRAPHY!!!!
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WHAT IS IT? Positron emission tomography (or PET) generates an image which shows brain function and activity during certain tasks. A good way to remember the name is to think about how POSITRIVELY awesome it is!
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HOW DOES IT WORK? A harmless radioactive substance is injected into the patients bloodstream. This reaches the brain and emits radioactive signals when a part of the brain has been activated. These signals are detected by the PET scan. These areas show up as red, as shown to the right. Patients will usually be asked to talk, think or perform another behavioural activity while the scan is being undertaken.
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VALUES :) -Easily distinguish tumours -Detailed images of brain activity -Different areas of the brain can be observed -Can more accurately determine areas of brain damage than other methods -Use of colour coding makes interpretation easy
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LIMITATIONS :’( -Due to radiation, scans must be kept very short to prevent too much exposure -Each scan takes 30 seconds, so it will not pick up split second changes.
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THE END LOL