Question

which of the following diagnostic procedures is used to obtain cerebrospinal fluid for analysis?
a nerve conduction velocity
b lumbar puncture
c positron emission tomography
d cerebral angiography

Explanation:

• Nerve conduction velocity measures nerve function, not for obtaining cerebrospinal fluid.
• Lumbar puncture (spinal tap) is specifically done to collect cerebrospinal fluid for analysis.
• Positron emission tomography is an imaging technique to show metabolic processes in the body, not for fluid collection.
• Cerebral angiography is used to visualize blood vessels in the brain, not for obtaining cerebrospinal fluid.

Answer:

B. lumbar puncture