Functional magnetic resonance imaging (fMRI)
Functional magnetic resonance imaging of the brain (fMRI) is used to determine the specific location within the brain where a certain function, such as speech or memory, occurs. The general areas of the brain in which such functions occur are known, but the exact location may vary from person to person. During functional resonance imaging of the brain, the patient will be asked to perform a specific task, such as recite the Pledge of Allegiance while the scan is being done. By pinpointing the exact location of the functional center in the brain, doctors can plan surgery or other treatments for a particular disorder of the brain.
It is also used during surgery to maximize tumor resection while minimizing the possibility of weakness, blindness or speech loss.