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How Does an MRI Work?

MRIs produce a strong magnetic field.

MRIs use magnets that produce a strong magnetic field, forcing protons in the body to align with that field. When a radiofrequency current is pulsed through the patient, the protons are stimulated and spin out of equilibrium. When the current is off, the protons realign, release energy, and send out signals picked up by receivers. 

These signals make digital images of the body's scanned area and distinguish between various tissue types as protons realign at different speeds and produce distinct signals.

Please note that all medical articles featured on our website have been reviewed by qualified healthcare doctors. The articles are for general information only and are not medical opinions nor should the contents be used to replace the need for a personal consultation with a qualified medical professional on the reader's medical condition.

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