What It Is
An MRI is a method of obtaining detailed pictures of internal body structures which uses magnetic fields and radio frequency pulses. MRIs are noninvasive, usually painless, and help physicians diagnose and treat medical problems. Connecting the machine to a computer produces detailed pictures of organs, soft tissues, bone, and virtually all other internal body structures. MRIs are very accurate at detecting abnormalities, and can reduce the need for invasive exploratory surgeries, biopsies, and other high-risk procedures. The appeal of MRIs is their level of accuracy combined with a lack of risk to the patient.