
Patient Preparation for an MRI


You will be asked to lie down on a comfortable, padded table. Our technicians
will make sure you are properly positioned and relaxed. Based on the type
of MRI you are having, the scans last approximately 20 to 45 minutes.
The machine produces a knocking sound but is completely painless, and
you can communicate with the technologist at all times via intercom. You
can even listen to music throughout the procedure.
To ensure your MRI at Baton Rouge Radiology Group goes as smoothly
as possible, please review the information below:
- You should wear comfortable, loose-fitting clothing with no metal
buttons, zippers or grommets to your appointment. You may be asked
to wear a gown during the procedure.
- Jewelry and other accessories should be left at home if possible,
or removed prior to the MRI scan because they can interfere with
the magnetic field of the MRI unit. These include eyeglasses and
watches, as well as other objects such as credit cards, cell phones
and pagers.
- Unless you are told otherwise, you may follow your regular daily
routine and take medications as usual.
- If you have
Claustrophobia (klaw-strO-fO-bik)
- A morbid fear of being in a confined place.
claustrophobia (fear
of enclosed spaces) or anxiety, you may want to ask your physician
for a prescription for a mild sedative.
- As with any medical procedure, please inform the technologist if
you think you may be pregnant. Typically, pregnant women should not
have this exam because the risks of MRI to the baby are unknown.
In some cases, however, your physician may have decided that the
potential benefits outweigh the potential risks and this should be
communicated.
Depending on the type of MRI you are having, other preparations may be required.
- CONTRAST MRI – Our technologist may ask if you
have allergies of any kind such as hay fever, hives, allergic asthma,
or to food or drugs. You should know, however, that the contrast
material used does not contain iodine and is less likely to cause
an allergic reaction.
- MRI/MRA OF THE BRAIN OR HEAD – Do not wear eye
make-up. Tooth fillings and braces may distort images of these areas
so make sure the radiologist is aware of them.
- ABDOMINAL MRI – You will need to fast, having
nothing to eat or drink for at least 4 hours before the exam.
- MRCP – You will need to fast, having nothing to
eat or drink for at least 8 hours before the exam.
Special precautions for those with implants, electronic devices
or other metal objects within their bodies:
People with the following implants cannot be scanned and
should not enter the MRI area:
- internal (implanted)
Defibrillator - Also
called implanted cardiac defibrillator (ICD). A pacemaker-like
device that continuously monitors the heart rhythm and delivers
lifesaving shocks if a dangerous heart rhythm is detected.
defibrillator
- cochlear (ear) implant
- clips
used on brain
Aneurysm (an-yur-izm)
- A ballooning out of a segment of artery caused
by disease or weakness in the vessel wall. It may lead to
rupture and serious or fatal bleeding.
aneurysms
If you have any of the following devices or objects in your body,
let your technologist know because they may interfere with the exam or
potentially pose a risk:
- artificial heart valves
- implanted drug infusion ports
- infusion
Catheter (kath-i-ter) - 1)
A tubular instrument to allow passage of fluid from or into
a body cavity. 2) Especially a catheter designed to be passed
through the urethra into the bladder to drain it of retained
urine. 3) A flexible, hollow plastic or rubber tube that may
be passed into a blood vessel to withdraw fluids or inject
medicine or contrast materials.
catheter
- intrauterine device (IUD)
- implanted electronic device, including a
Cardiac Pacemaker - An electrical
device, often implanted, that maintains a normal heart rhythm
by stimulating the heart muscle.
cardiac
pacemaker
- artificial limbs or metallic joint prostheses
- implanted nerve stimulators
- metal pins, screws, plates or surgical staples
- shrapnel
(References: BRRG Procedure, Current guidelines from the U.S.
Department of Health and Human Services (HHS), the American Cancer Society
(ACS), the American Medical Association (AMA), the American College of
Radiology (ACR), the National Cancer Institute (NCI), and WWW.radiologyinfo.org)
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