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MRI (magnetic resonance imaging)

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a technique that uses magnetic fields and radio waves to produce computer-generated images of soft tissue. MRI scans show brain anatomy.

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CT scan

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a series of x-ray photographs taken from different angles and combined by computer into a composite representation of a slice through the body

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PET scan (positron emission tomography)

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a visual display of brain activity that detects where a radioactive form of glucose goes while the brain performs a given task

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Functional magnetic resonance imaging

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A type of specialized neuroimaging that registers blood flow related to neural activity in the brain or spinal cord.