During an MRI scan, you lie still on a movable bed that slides into a large, tube-shaped scanner. Here's a more detailed breakdown of the process:
1. Preparation:
- Medical History: You'll be asked about your medical history, any allergies, and if you have any metal implants (pacemakers, surgical clips, etc.), as these can interfere with the MRI.
- Clothing & Jewelry: You'll likely be asked to change into a gown and remove any jewelry, watches, or other metallic objects. Some makeup and personal care products may contain metal, so you might be asked to remove them too.
- Contrast Dye (Optional): In some cases, a contrast dye is injected intravenously to improve the visibility of certain tissues or blood vessels. If needed, this will be explained beforehand.
- Hearing Protection: The MRI machine is noisy, so you'll be given earplugs or headphones to wear.
2. The Procedure:
- Positioning: You'll lie down on a flat, padded bed that is part of the MRI machine. The radiographer (the trained professional operating the MRI) will position you correctly, depending on the area of your body being scanned. You may be moved into the scanner head-first or feet-first.
- Coils: A coil (a device that transmits and receives radio waves) will be placed around the body part being scanned. This helps improve the image quality.
- Entering the Scanner: The bed will slowly slide into the tunnel of the MRI scanner. It's important to remain as still as possible during the scan to ensure clear images.
- Scanning Process: The MRI machine will make loud banging, clicking, or whirring noises. This is normal. The radiographer will be able to communicate with you throughout the scan, usually through an intercom.
- Duration: The scan duration varies depending on the body part being examined and the complexity of the case, but it generally lasts between 15 minutes and an hour.
3. After the Scan:
- Removal: The bed will slide out of the scanner.
- Post-Contrast Monitoring: If you received contrast dye, you might be monitored for a short time for any adverse reactions.
- Normal Activities: You can usually resume your normal activities immediately after the scan.
- Results: A radiologist will analyze the images and send a report to your doctor, who will then discuss the results with you.
Key Personnel:
- Radiographer: A trained professional who operates the MRI machine and ensures your safety and comfort during the scan.
- Radiologist: A doctor who specializes in interpreting medical images, including MRI scans.
Important Considerations:
- Claustrophobia: If you are claustrophobic (fearful of enclosed spaces), inform your doctor and the radiographer beforehand. They can take steps to make you more comfortable, such as offering medication or using an open MRI scanner (if available).
- Pregnancy: If you are pregnant or think you might be pregnant, inform your doctor, as MRI scans may not be recommended during pregnancy, especially in the first trimester.
