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Reference.org
Blood-oxygenation-level–dependent imaging
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<p>Blood-oxygenation-level–dependent imaging, or BOLD-contrast imaging, is a method used in <a href="/facts/Functional_magnetic_resonance_imaging/GIayRTAL">functional magnetic resonance imaging</a> (fMRI) to observe different areas of the <a href="/facts/Brain/EKla9NkJ">brain</a> or other organs, which are found to be active at any given time. </p>