Magnetic Resonance Imaging (MRI) of the Knee
How To Prepare continued...
You may need to arrange for someone to
drive you home after the test, if you are given a medicine (sedative) to help you relax.
You will be asked to sign a consent form that says you understand the risks of the test and agree to have it done.
your doctor about any concerns you have regarding the need for the test, its
risks, how it will be done, or what the results will mean. To help you
understand the importance of this test, fill out the
medical test information form(What is a PDF document?).
How It Is Done
A magnetic resonance imaging (MRI) test
is usually done by an MRI technologist. The resulting pictures are usually
interpreted by a
radiologist. But some other types of doctors, such as
orthopedic surgeon, can also interpret a knee MRI
You will need to remove all metal objects (such as hearing
aids, dentures, jewelry, watches, and hairpins) from your body because these
objects may be attracted to the powerful magnet used for the test.
You will need to take off all or most of your clothes, depending on which
area is examined (you may be allowed to keep on your underwear if it is not in
the way). You will be given a gown to use during the test. If you are allowed
to keep some of your clothes on, you should empty your pockets of any coins and
cards (such as credit cards or ATM cards) with scanner strips on them because
the MRI magnet may erase the information on the cards.
During the test
test, you will lie on your back on a table that is part of the MRI scanner. The
table will slide into the space that contains the magnet. A device called a
coil may be placed over or wrapped around the area to be scanned.
Some people feel nervous (claustrophobic) inside the standard MRI machine . If
feeling nervous keeps you from lying still, you can be given a medicine
(sedative) to help you relax.