According to Mayo Clinic, the acronym MRI stands for magnetic resonance imaging. It is a technique that utilizes a strong magnetic field and radio waves to produce a detailed image of the soft tissues and organs in the human body.
An MRI is an imaging test that produces a three-dimensional image of the human body. During an MRI test, the hydrogen atoms inside the patient's body are temporarily realigned, according to Mayo Clinic. Then, radio waves are produced that cause the realigned hydrogen atoms to emit a slight signal. These signals are utilized to create image slices of the human body for diagnostic reasons.