MRI (Magnetic Resonance Imaging)
What is MRI?
Magnetic Resonance Imaging (MRI) is an advanced medical imaging technique that provides very clear images of internal organs and body tissues, without the use of radiation. The MRI unit uses radio waves and a strong magnetic field to produce its images, which appear as highly detailed "slices" of anatomy. MRI is an excellent tool for diagnosing diseases of the brain, spine, skeleton, abdomen and soft tissues. It has become a frequently requested imaging technique.
What should I expect?
How long will it take?
How do I prepare?
Locations
What will happen during my MRI exam?
An MRI is a painless, easy exam to undergo. When you arrive for the procedure, you will be asked to remove any metallic objects on your person, as they will affect the quality of the diagnostic images, and they can be propelled by the strong magnetic field. Some patients may be required to change into comfortable scrubs which we provide. The technologist will then ask you to lie on a cushioned scanner table. A device called a "coil" will be placed over or under you. When you are comfortably positioned, the table will move through the magnet, or tunnel. The magnet is well lit and well ventilated.
As the exam proceeds, you will hear a muffled thumping sound for several minutes at time. You will be required to lie as still as possible, as any movement will blur the images.
Throughout the exam, the technologist will be watching you through a large window, from where the MRI's scanner controls are located. However, you will remain in constant contact with the technologist, both visually and through an intercom. The exam will end once all the images are collected.
The procedure poses no risk to adults or children as long as standard measures are followed. Because you are placed in a magnetic field during the exam, any metal on your person can potentially be moved and cause you injury. Be sure to inform the MRI technologist if you have:
- Cardiac pacemaker
- Artificial heart valve
- Metal plate pin or other metallic implant
- Intrauterine device
- Aneurysm clip(s)
- Previous gunshot wound
- Infusion pump
- Permanent eyeliner tattoo
- Body piercings
Be sure to inform the technologist if you are or may be pregnant.
How long does an MRI exam take?
The length of the exam will depend on the type of MRI you are having and the number of images required. Normally, an exam lasts about 20 minutes, although some may take up to 60 minutes. Each image exposure lasts 3 to 5 minutes. Once the exam is over, a radiologist will interpret the images and forward the results to your physician.
How do I prepare for my MRI scan?
No special preparations are required for an MRI exam. You may eat normally and take your usual medication prior to the procedure. On the day of the exam, wear comfortable clothing without zippers, buttons or other metal fixtures.
If you have undergone previous imaging procedures that may be pertinent to your MRI, arrange to have them sent to us prior to your exam.
