A Patient's Guide to Clarksville's Only Open
MRI:
Magnetic Resonance Imaging (MRI) uses a magnetic field and radio waves
instead of x-ray to display many parts of the body, especially the brain,
spine and joints.
What is an Open MRI?
Our Open MRI has clear unobstructed space on three sides, so you can
see and talk to our staff during the exam. That means a more pleasant
experience for you.
What is the exam like?
The exam usually takes 30 to 60 minutes. It consists of several image
exposures lasting 10 to 15 minutes each. You'll be asked to remove your
eye glasses, watch, jewelry, credit cards, dentures, hearing aids and
any other metallic objects you are carrying. Then, the technologist
will help you lie down on a cushioned table. A device called a "coil"
will be placed over or under you. It helps the MRI system create a clear
picture of your body. When you are comfortably positioned, the table
will move under the magnet.
The technologist will then step into the control area, while staying in constant contact with you both visually and through an intercom.
As the exam proceeds, you will hear a muffled thumping sound for several minutes at a time. Other than that, the MRI creates no bodily sensation. Relax and try to lie as still as possible. Any movement during this time will blur the picture. When the exam is finished, the technologist will help you off the table.
Do I need to prepare for the exam?
No special preparation is needed. Eat normally and take medication as
usual, unless your doctor has given you other instructions. You may
find it easier to relax if you avoid drinking coffee or other caffeine
beverages before your exam.
Is there any risk?
Magnetic Resonance Imaging is very safe. There are no health risks associated
with the magnetic field or the radio waves used by the machine. However,
some special circumstances limit the use of a magnetic field, so it
is important for you to tell us if any of the following apply to you
or someone accompanying you into the exam room:
• Cardiac Pacemaker or Artificial Heart Valve
• Metal Plate, Pin or other Metallic Implant
• Intrauterine device such as Copper-7 IUD
• Insulin pump or other infusion pump
• Aneurysm clips
• Previous gun wound
• Inner ear implant
• Ever been a metal worker (had metal in eye)
• Permanent (tattoo) eye liner
Any metallic substance on your person can affect the quality of the diagnostic images. It can also cause discomfort or injury to you when placed in the magnetic field, and may exclude you from the exam.
• Also be sure to tell us if you are pregnant.
Will I need an injection?
In most cases an MRI exam does not require any injections. In some situations
however, a substance known as a contrast agent may be needed to enhance
the ability of the MRI to see into your body. All contrast agents are
cleared by the FDA and are considered safe.
Are there any limitations?
Open MRI is designed for the claustrophobic or anxious patient, children
that need someone to sit with them, or large patients under the weight
limit of 450lbs. Some studies are more difficult to do on different
patients. Very anxious patients and small children may be given a sedative
to help them relax and lie still during the exam. If you think you will
require a sedative, you will need to contact your physician and bring
someone to accompany you home. With the Open MRI we are able to give
the patients another choice to the traditional exam.
