Final answer:
The incorrect statement indicates that the patient believes he will be asleep during the PET scan, while in fact, patients are typically awake and may only receive a mild sedative.
Step-by-step explanation:
The statement by the patient that indicates a misunderstanding about the positron emission tomography (PET) procedure is "I will be asleep during most of the test; I will get a mild medication to help me relax." In a PET scan procedure, patients are generally not put to sleep, although they may be given a mild sedative to help with relaxation. The purpose of a PET scan is to monitor brain activity and other functions by injecting a radioactive tracer. This tracer helps highlight areas of increased or decreased metabolic activity. In the context of Alzheimer's disease, a PET scan can help identify the accumulation of beta-amyloid deposits in the brain, characteristic of Alzheimer’s disease, by showcasing specific patterns of brain activity and metabolism. The patient's statement suggests a misunderstanding about the nature of being awake and aware during the PET scan procedure.