functional magnetic resonance imaging
- functional magnetic resonance imaging
-
neuroimaging technique used in biomedical research and in
diagnosis that detects changes in
blood flow in the
brain. This technique compares brain activity under resting and activated conditions. It combines the high-spatial-resolution noninvasive imaging of brain anatomy offered by standard
magnetic resonance imaging (
MRI) with a strategy to distinguish between the
magnetic resonance states of
hemoglobin in the presence or absence of
oxygen. This enables the detection of increases in blood oxygen levels when brain activity brings fresh blood to a particular area of the brain. Functional magnetic resonance imaging allows for the generation of detailed maps of brain areas that underlie human mental activities in health and disease. This technique has been applied to the study of various functions of the brain, ranging from primary sensory responses to cognitive activities.
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Universalium.
2010.
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magnetic resonance imaging — noun the use of nuclear magnetic resonance of protons to produce proton density images • Syn: ↑MRI • Hypernyms: ↑imaging, ↑tomography • Hyponyms: ↑functional magnetic resonance imaging, ↑fMRI … Useful english dictionary
functional magnetic resonance imaging — A noninvasive tool used to observe functioning in the brain or other organs by detecting changes in chemical composition, blood flow, or both … English dictionary of cancer terms
