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Brain MRI: MRI brain scan (in the axial planeâthat is, slicing from front-to-back and side-to-side through the head) showing a brain tumor at the bottom right. The fMRI is a series of MRIs that measures both the structure and the functional activity of the brain through computer adaptation of multiple images.
A functional MRI, or fMRI, of the brain is useful for people who might have to undergo brain surgery. An fMRI can pinpoint areas of the brain that are used for speech and language, as well as, for movement of the body.n MRI is different from a computed tomography (CT) scan or an X-ray in that it does not use radiation to produce images. The images can be combined to form a 3-D picture of your internal structures, so the MRI is more effective than other scans at detecting abnormalities in the pituitary gland and brain stem.