Review: 'The Last Jedi' Is 'The Dark Knight' Of The 'Star Wars' Saga 'The Last Jedi' May Be Too Good Of A 'Star Wars' Movie; Hollywood Is About To Become A 3-Way Battle Between Disney, Universal And Warner... Box Office: 'Ferdinand' Is A Chance For Blue Sky To Prove Its Worth To Dis...
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.
Shades of blue and black indicate decreased or no activity within a brain region. In essence, a PET scan produces a âmapâ of the active brain. Scientists can use PET scans to see what happens in the brain when a person is engaged in a physical or mental activity, at rest, or even while sleeping or dreaming. Certain tracers can track the activity of brain chemicals, for example neurotransmitters such as dopamine and serotonin.