Mental Health HESI Practice Questions Related

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A client is scheduled to complete a positron emission tomography (PET) scan. The client asks the nurse to explain the reason the test was prescribed. How should the nurse respond?

  • A. Images indicate the presence of tumors and scars.
  • B. The scan clearly outlines structures of the brain.
  • C. Results show activity in various portions of the brain.
  • D. PET shows biochemical levels of neurotransmitters.
Correct Answer: C

Rationale: The correct answer is C. PET scans are primarily used to detect and observe the metabolic activity in various parts of the brain. This helps in diagnosing conditions related to brain function, such as tumors, brain disorders, and overall brain activity. Choices A, B, and D are incorrect because PET scans focus on metabolic activity and functions in the brain rather than solely indicating the presence of tumors, outlining brain structures, or showing biochemical levels of neurotransmitters.