Rais just returned from a neurological consultation, where he was informed he will undergo an evaluation involving brain scan imaging following the intravenous administration of radioactive tracers. Unable to recall the precise label of the procedure, it appears his neurologist is scheduling:
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Answer: B. a positron emission tomography (PET) scan
Explanation
A PET scan involves intravenous injection of radioactive tracers to measure brain metabolic activity. Neurologists use positron emission tomography to visualize functional activity within the brain. Radioactive isotopes decay and emit positrons, which detectors map into functional brain images. Neuroimaging technologies allow physicians to diagnose brain disorders without invasive surgery. PET scans specifically highlight areas of high glucose consumption during cognitive tasks. Radiopharmaceuticals are safely administered in small doses for diagnostic medical imaging.
Medical neurologists order PET scans to evaluate neurodegenerative diseases like Alzheimer dementia. Researchers use functional brain imaging to study which regions control specific mental tasks. Patients receive detailed preparation instructions regarding radioactive tracer administration before scans. An EEG records electrical brain wave activity through electrodes placed on the scalp. A CT scan uses X-ray technology to produce structural images without radioactive tracers. An MRI uses powerful magnetic fields and radio waves to generate detailed structural scans.
- Subject
- Psychology
- Category
- Psychology
- Topic
- —
- Difficulty
- medium
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