how MRI (magnetic resonance imaging) works
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Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to form pictures of the anatomy and physiological processes of the body in both health and disease.
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MRIs employ powerful magnets which produce a strong magnetic field that forces protons in the body to align with that field. When a radiofrequency current is then pulsed through the patient, the protons are stimulated, and spin out of equilibrium, straining against the pull of the magnetic field.
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