Welcome to Winchester Orthopaedic Associates, Ltd

Patient Education:

 

What is an MRI?

Magnetic Resonance Imaging (MRI) is a painless, noninvasive procedure that uses magnetic waves, radio waves, and computers to detect abnormalities.  The unique feature about the MRI is that it does not require exposure to radiation.  The test takes approximately 90 minutes to complete, and involves being placed on a narrow platform that slides into a tube containing a doughnut shaped magnet.  The opening for your head and body is small and deep, therefore if you have experienced claustrophobia in the past you may need a sedative to help relax.  However, there is a new open MRI machine that is not as confining and may be requested if you have experienced claustrophobia.  During the test, you may hear the scanner clicking or thumping as it moves.  This is completely normal.  You will be asked to lay completely still throughout the test because any movement can cause artifact on the scan.  However, you will be able to talk with the technician at all times during the test.  Before you undergo the MRI the nurse should assess for any metal implants, clips, pacemakers, or metal fragments in your body.  (Because the MRI works through the use of powerful magnets it can not be performed on people with metal in their body.  The magnet could move the object within the body causing injury.)  After the test, you may return to normal activity with no special post procedural care needed.

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