Magnetic Resonance Imaging (MRI)
Magnetic resonance imaging (MRI) is an imaging modality used to produce high- quality images of the body, without the use of X-rays. Instead, it uses a strong magnetic field, radio waves and a computer to produce images of various body parts.
Do I need a physician’s order to have an MRI?
Yes, your physician must order your MRI. If you are given a written order (script) for your test, bring it with you or the exam may be delayed.
How do I prepare for the scan?
Before the scheduled exam, a member of the MRI team will call you and ask a few health history questions. This screening is to ensure any implanted devices on or in y our body are cleared prior to your appointment. For your safety, this screening is repeated after you arrive for the exam. If you have a history of working with metal, you may be required to have an orbital exam prior to the MRI.
Will I experience claustrophobia?
Claustrophobia is the fear of confined spaces. Wheeling Hospital offers wide-bore MRI scanners. Wide-bore scanners have larger openings and the bore length is shorter that traditional MRI scanners. There is constant communication between the patient and the technologist via an intercom system. Also, depending on the body part being imaged, headphones with music can be provided for a patient’s comfort.
Who may not be able to have an MRI?
The majority of patients with implanted devices can have an MRI. Many devices have scanning conditions that must be met in order to proceed with an MRI. Examples of device manufactured scanning conditions are: limitations to the part of the body that can be imaged, wait time since implantation until an MRI can be performed, or implanted devices that must be evaluated pre- and post-MRI. All these conditions must be taken into consideration by MRI staff prior to the exam.
Before the exam:
You change into a hospital-provided gown and pants.
You will remove:
- Hearing aids
- Jewelry and watches
- Hairpins
- Medical skin patches
What happens during the scan?
You will be positioned on the MRI table. The technologist will operate the scanner from an adjoining room. You will have to lie still for periods of 3-10 minutes at a time, while a series of images are collected. You will not feel anything during the scan, but you may hear thumping, knocking or humming sounds from the scanner. You can breathe freely for most of the MRI exam. Most single body part exams last between 30 and 60 minutes.
What is contrast?
Some MRI procedures require contrast. Contrast is the term used for the material that is injected intravenously into a vein in your arm or hand to enhance the visibility of certain tissues or blood vessels.
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