Rais just came back from seeing a neurologist. Rais tells you that he will be having a test in which images of his brain will be recorded after radioactive chemicals have been injected into his chemicals have been injected into his bloodstream. However, Rais can't remember the actual name of the test. it appears that his neurologist is planning:
Correct answer: B. a positron emission tomography (PET) scan
- A. an electroencephalograph (EEG) recording
- B. a positron emission tomography (PET) scan
- C. a computerized tomography(CT) scan
- D. a magnetic resonance imaging (MRI) scan
Explanation
A PET scan uses an injected radioactive tracer to show metabolic activity in the brain. EEG records electrical waves, while CT and ordinary MRI do not require radioactive chemicals in the bloodstream.
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