BLG 10A/B Study Guide - Final Guide: Magnetic Resonance Imaging, Nuclear Magnetic Resonance Spectroscopy, Degenerative Disease
26 Aug 2018
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Often used to differentiate tissues based on water content (ex. White and gray matter in brain), used to detect tumors, degenerative disease and multiple sclerosis plaques that can"t be seen by ct scans. Not able to see problems with lungs bc. lungs have low water content but can fill lungs with magnetizable gas allowing it to be seen. Not able to see dense structures (ex. Peers through scull and vertebral column allowing nerve fibers of spinal cord to be sen) Magnetic resonance spectroscopy (mrs): maps the distribution of elements other than hydrogen to reveal how disease changes body chemistry. Functional mri: tracks blood flow into brain in real time without use of injections of tracers. Often used to pinpoint much smaller brain areas than what pet can. Element: unique substances composed of atoms that cannot be broke dow into simpler substances by ordinary chemical methods.
