The table will slowly move into the tunnel portion of the scanner until it is over the part of your body to be scanned. Even though the tunnel looks narrow, it is large enough to lie inside. The magnet will not touch or hurt you. Expect to hear loud sounds such as thumping, knocking, beeping and clicking which come from the magnet. These sounds are normal You must lie very still for about one hour.
Movement can cause the pictures to be blurred.
Some straps may be placed over you to remind you to hold still. MRI does not use x-rays. These radiowaves come back from the body and very clear pictures are made by a computer. The doctor will then carefully look at the pictures. What You Should Know Before Your MRI Scan.