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Magnetic resonance imaging (MRI)
This diagnostic procedure uses a combination of large magnets, radio frequencies and a computer to produce detailed images of organs and structures within the body. Your child lies on a bed that moves into the tunnel-like CT scanner. The machine takes a series of pictures of the inside of the body using a magnetic field and radiowaves. The computer enhances the pictures produced.
The test is painless and does not involve exposure to radiation. Because the CT scanner is like a tunnel, some children who are claustrophobic or unable to hold still during the test might be given medication to help them relax or sleep. Metal objects cannot be present in the MRI room, so children with pacemakers or metal clips or rods inside the body cannot have this test done. All jewelry must be removed before the procedure.