| MRI What
is the procedure?
MRI stands for Magnetic Resonance Imaging. The test uses a magnetic
field in conjunction with a radiofrequency pulse to obtain pictures
of the vessels and organs of the body.
If necessary to obtain better images, an injection of gadolinium
may be administered by either the nurse or the doctor.
People with pacemakers cannot have an MRI, as the magnet in the
machine could disrupt the function of the pacemaker. If you have
stents, screws, nails, shrapnel, bullets, tattoos, IUDs, hearing
aids, staples, or any other metal in your body, please inform the
technologist.
If you can handle the closed, Hi-Field Strength MRI machine
at Advanced Medical Imaging, that is preferred. For claustrophobic
patients,
Great Neck Imaging offers an open MRI machine that is slightly
wider and more open at the sides. Some patients find it beneficial
to
take a sedative, such as Valium, before the exam. Speak to
your doctor about this option, and be sure to bring someone
to drive
you home.
The day of the exam:
There is no preparation for an MRI exam. However, the technologist
will tell you what clothing and accessories to remove, such as hearing
aids, watches, hairpins, and jewelry.
During the exam:
The MRI takes about 45 minutes without the injection, and about
an hour with it. During the exam, you will lie on the table with
the targeted area directly under the magnet. You must hold still
at certain times although the machine may move in and out. Be prepared;
the machine does make some loud clanging noises but you may choose
from a large selection of CDs to listen to during your exam. The
technologist will watch from a window at all times, and will use
an intercom to speak with you.
After the exam:
Call your referring physician for results, which are generally
available within 24 hours.
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