Question

which of the following diagnostic procedures uses positively charged isotopes to image the brains metabolically active tissues?
a nerve conduction velocity
b lumbar puncture
c positron emission tomography
d cerebral angiography

Explanation:

• Nerve conduction velocity measures how fast an electrical impulse moves through a nerve.
• Lumbar puncture is used to collect cerebrospinal fluid for analysis.
• Positron emission tomography (PET) uses radioactive tracers (positively - charged isotopes in some cases) to show metabolic activity in the body, including the brain.
• Cerebral angiography is used to visualize blood vessels in the brain.

Answer:

C. positron emission tomography