MRI

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MRI (magnetic resonance imaging) is a diagnostic procedure that combines a powerful magnet, radio waves and computer technology to provide detailed images of tissues, muscles, nerves and bones. Because MRI uses magnetic force and radio waves to create images, there is no radiation exposure during the procedure. MRI is often used instead of CT to study soft tissues or organs because bones do not obscure the organs and soft tissues as they do with CT imaging.

MRI can be used to assess everything from ruptured discs in the spine to detecting brain tumors and vascular diseases through techniques such as:

• Spectroscopy (MRS) assesses chemical abnormalities in the brain for conditions such as coma, Alzheimer's disease, stroke, brain tumors, head injury and MS.
• Angiography (MRA) evaluates blood flow, or detects brain aneurysms or blood vessel abnormalities. It is used to visualize renal, carotid and vertebral arteries, or examine the aorta for aneurysm.
• Perfusion and diffusion scanning examines blood flow through tissues to evaluate strokes.

Preparing for an MRI

We want your MRI procedure to be as pleasant and comfortable as possible. To aid in that, please keep in mind the following guidelines:

• Wear loose-fitting clothing without metal zippers or snaps.
• Continue to take your medications daily.
• Eat and drink normally prior to your MRI.
• Bring your MRI referral from your doctor.
• Arrive well ahead of time to complete any necessary paperwork.
• If you need to take medication to relax, please bring someone to drive you home.

Some conditions may prevent you from having an MRI. If you have any of the following, please tell your doctor or MRI technologist, or let our scheduling personnel know when you schedule your appointment:

• Cardiac pacemaker
• Implantable cardioverter defibrillator (ICD)
• Cochlear implants
• Prosthesis within your body
• Aneurysm clips (magnetic)
• Metal filings/fragments in your eyes or body
• Body piercings or tattoos
• Pregnancy

What to Expect

MRI is one of the most accurate and advanced imaging tests available today. Here is what you need to know if your doctor prescribed an MRI for you:

• It's a non-invasive way to take dozens of pictures inside your body in only 30-50 minutes.
• The images are much clearer and more detailed than x-rays and can help your doctor give you a better, more complete diagnosis.
• The MRI technology uses a magnetic field and a computer to construct your images.
• Sometimes your doctor will prescribe an intravenous contrast "dye" to be given to you during your MRI to enhance the visibility of your blood vessels or tissues.

If your physician has ordered an MRI, call (352) 796-5474 to speak to a one-call scheduling specialist.