Functional MRI
Also written as: fMRI — functional Magnetic Resonance Imaging
Magnetic resonance imaging technique that maps brain activity by detecting blood flow changes during specific tasks.
Full Definition
Functional magnetic resonance imaging (fMRI) is a specialized neuroimaging technique that measures brain activity by detecting changes in blood oxygenation and flow during task performance. In neuro-oncology, fMRI is used for pre-surgical planning to map eloquent brain regions near tumors, helping surgeons maximize resection while preserving critical functions such as language, motor control, and memory. The technique requires patient cooperation during scanning and produces activation maps that guide surgical approach and risk assessment.
Usage
Usage note: Capitalize 'MRI' when used as an abbreviation; use lowercase when spelling out the full term.
In Context
- "Functional MRI demonstrated language activation adjacent to the tumor margin." — Pre-operative imaging report
- "The surgical plan was modified based on functional MRI mapping of motor cortex." — Neurosurgical consultation