A magnetic resonance imaging (MRI) scan takes detailed pictures inside of your body. It uses a strong magnet, radio waves, and a computer. Scans usually take 20 minutes to one hour depending on the type of scan your doctor ordered.
Certain MRI scans use a special dye given through an IV. It helps certain areas show up more clearly.
Some people have an allergic reaction to the dye. If you have had a mild or moderate reaction in the past, your doctor will need to order medicine for you. If you have had a severe reaction, your doctor will work with a radiologist to plan your care safely.
You also need to remove all metal objects from your body before your scan. This includes jewelry and any piercings. If you have a new tattoo, you must wait at least 48 hours before getting your scan.
The information below can help you prepare:
- Abdomen or pelvis MRI: Do not eat or drink for four hours before you arrive. You may also need to take a fleet enema. Your doctor will let you know.
- All other MRI scans (arthrogram, bones and joints, chest, head, neck, and spine): No special preparation is needed.
If you have questions about your MRI, please speak with your care team.