What is an MRI Test?

QUESTION: I'm to have a new test called MRI. As with anything medical, and
unknown, I have become quite worried about this whole deal. Is there
anything I can do to prepare myself for the test?
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ANSWER: Magnetic resonance imaging (MRI) is used to check for possible
disorders of the brain or spinal cord, or for problems with the lower back,
heart, chest, pelvis, and other areas. It places you in a strong magnetic
field, where a series of radio signals will be beamed at the part of your body
being studied. This will stimulate certain atoms in your own tissue to
produce radio signals of their own. The resulting signals are translated by
computer into pictures of that body part.
Because MRI involves magnets, you will need to remove all jewelry and
metallic objects, and the test is not for people with pacemakers, surgical
clips, or other metal objects in their bodies.
During the test, you will be lying on a table that will slide you inside
a large metal cylinder. Although you will be able to talk through a
communications system, tell your doctor if you have ever had claustrophobia or
anxiety from being a small enclosure.
Finally, as with x-rays or photos, you need to relax and remain still
during the test. You won't feel anything, but you'll hear a soft tapping from
the radio signals. Afterwards, unless your doctor gives you other
instructions, you'll be able to resume normal activities immediately. It
would seem that your biggest task at present is to remain calm awaiting a
test that will cause no physical pain and will assist your physician in
caring for you.