Question

what is the purpose of using positron emission tomography (pet) in medical diagnostics? to measure blood pressure in the body. to monitor heart rate. to visualize metabolic processes in the body. to detect electrical activity in the brain.

Explanation:

Positron - Emission Tomography (PET) uses radioactive tracers to show metabolic processes in the body. It helps in detecting areas of abnormal metabolic activity which can be indicative of diseases like cancer, neurological disorders etc. It does not measure blood pressure, monitor heart rate or detect electrical brain activity directly.

Answer:

To visualize metabolic processes in the body.