Magnetic resonance imaging (MRI)
A non-invasive imaging technology, often used for brain imaging.
An MRI scanner includes intensely powerful supercooled magnets, typically 10,000 to 40,000 times as strong as the Earth’s magnetic field. These magnets, combined with coils that send electromagnetic pulses into the scanned tissue, induce radio-frequency signals from individual hydrogen atoms within the tissue. The scanner records and processes these signals to create an image of the scanned tissue. MRI scans can depict high resolution images of the entire brain, allowing clinicians to determine if the brain tissue visualized is normal, abnormal, or damaged due to a neurological disorder or trauma. MRI technology has also been adapted to measure brain activity with functional MRI methods.