You have gone to a neurologist and she tells you that you need additional tests. One procedure will require that you receive an injection of a mild radioactive substance (a tracer) mixed with glucose. You know immediately that you are being scheduled for a

Question

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A PET scan (Positron Emission Tomography) involves the injection of a tracer, usually a mildly radioactive substance combined with glucose, to visualize metabolic activity in different areas of the brain. This matches the description provided in the question.

B) CAT (Computed Axial Tomography) and C) MRI (Magnetic Resonance Imaging) do not involve the injection of a tracer or glucose, and D) CBF (Cerebral Blood Flow) may involve the injection of a tracer, but not glucose.

You Have Gone to a Neurologist and She Tells You