MRI (Magnetic resonance imaging ) is the acronym of Magnetic Resonance Imaging which is defined as the body imaging technique in which a person is surrounded with a strong magnetic field.

Radio waves are directed at a particular part of the body, causing the centers of hydrogen atoms in those structures to align themselves in predictable ways. Computers collate information about how the atoms are aligning and produce a composite three-dimensional image. MRI is a visualization procedure that provides the most detailed images of brain structures. The advantage of functional MRI over other functional procedures, such as positron emission tomography , is that it provides good spatial resolution and images in short time periods, or "real time"; a technique for revealing high-resolution images of the structure of the living brain by computing and analyzing magnetic changes in the energy of the orbits of nuclear particles in the molecules of the body

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