| Developed
in the 1980s, MRI utilizes computers and magnetic fields to
provide safe and non-invasive images of the human anatomy.
Unlike X-rays and CT scans, MRI uses no radiation.
It creates images using powerful, superconducting
magnets to generate magnetic fields 8,000 times stronger than
that of the Earth.
An estimated 13 million MRI exams are performed
annually around the globe, and the total number of MRI procedures
is increasing at approximately 15% each year.
MRI
can provide a detailed view of every organ in your body. This
information can lead to early detection and treatment of diseases,
which in the past have only been found by surgery. MRI can
detect abnormal tissues caused by an injury, tumor or medical
illness.
MRI is very safe, as long as precautions are appropriately
maintained. Metal on or in your body can affect the MRI pictures.
Metal can cause discomfort or serious injury when placed in
the magnetic field. Before your scan, it is important to let
your doctor and the MRI staff know if you have any of the
following:
- Cardiac pacemaker, defibrillator, artificial
heart valve or recent heart surgery
- Metal plate, pin or other metal implant
- Intrauterine device (IUD)
- Insulin pump or other infusion pump
- Aneurysm clips or past brain surgery
- Stents
- Previous gun wound, shrapnel or metal
fragments
- Inner ear implant (cochlear implant)
- Metal fragments in eye or face (including
metal shavings, slivers, bullets or BB’s)
- Permanent (tattooed) eyeliner
- Tattoos
- Body piercings
- Any other object that may contain metal
- Pregnancy
- Neurostimulator (TENS unit or device to
stimulate nerves)
Based
on this information, your doctor or the MRI Radiologist will
determine if you can have an MRI scan. It is important to
let your doctor and the MRI
technologist know if you have any allergies. You should let
your doctor know if you are pregnant or breastfeeding.
No special preparation is needed. Eat normally
and take medication as usual, unless your doctor has given
you other instructions. Let your doctor know before your appointment
if pain prevents you from lying still. It is very important
that you are able to lie still for the exam. MOVEMENT WILL
BLUR THE PICTURES.
  
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