Preparation for an MRI
MRI uses magnets to create images, so it is highly sensitive to metals, which can distort detail and clarity. Do not apply antiperspirants, deodorants, make-up, body lotions, perfumes on the day of your test as they may contain metals like aluminum and iron oxides. Remove all metal objects – jewelry, watches, piercings, step trackers. Hearing aids will be collected before your scan. You may be asked to change into a hospital gown to minimize any hidden metals.
Safety Guidelines for an MRI
The absolute most important thing is to not lie or leave out information when talking to your doctor or the MRI technicians. MRIs are not safe for certain people. If you are pregnant or breastfeeding, you may be asked to delay the MRI. Tell the technicians about any medical devices implanted in your body.
MRI Process and Considerations
Most MRIs take 15 to 90 minutes. Remember to use the restroom beforehand as you won’t get another chance until your scan is over. While fasting is not required for most MRIs, your doctor may advise you to not eat or drink for at least five hours before a pelvic or abdominal MRI. For other types of scans, continue drinking water and eat light meals made of fruits, vegetables, beans before your appointment.
The MRI machine is large and tube-shaped. You will lie inside the tube during the scan. The strong magnetic field realigns water molecules in your body, then radio waves induce these molecules to create 2D or 3D cross-section images used for diagnosis.
Safety Measures during an MRI
Although modern MRIs are considered safe, the loud knocking noises during the scan may harm hearing if ear protection is not used. The magnetic fields may also cause twitching sensations. Radiofrequency energy could lead to body heating. Your doctor will monitor you during the procedure.