Magnetic Resonance Imaging (MRI) scans are a common diagnostic tool. An MRI is a non-invasive procedure that uses strong magnetic fields and radio waves to create detailed images of the body’s internal structures. While the process itself does not cause pain, it involves unique sensations and can lead to discomfort for some individuals. Understanding what to expect can help ease apprehension.
What an MRI Feels Like
During an MRI scan, you will lie on a padded table that slides into a large, tube-shaped machine. Remaining perfectly still is necessary for clear image acquisition, as motion can blur the results. The machine produces loud noises, often described as knocking, thumping, clicking, whirring, or buzzing. These sounds originate from gradient coils rapidly switching on and off to create images. This causes the coils to vibrate, producing loud noises that can reach volumes similar to a jackhammer (65-130 decibels).
You may also experience mild tingling or warmth in the scanned area, which are temporary and subside after the scan. While the procedure uses powerful magnets, you will not feel the magnetic field or radio waves themselves. The duration of an MRI can vary, typically ranging from 15 minutes to over an hour, depending on the body part and number of images required.
Addressing Potential Discomforts
One of the most common concerns during an MRI is the intense noise generated by the machine. Earplugs or headphones are typically provided to protect your hearing and minimize disruption. The enclosed nature of traditional MRI scanners can also trigger feelings of anxiety or claustrophobia for some individuals.
Lying perfectly still for the entire duration of the scan can lead to stiffness or minor aches, particularly for those with existing injuries or conditions. While the MRI itself is not painful, this prolonged stillness can be physically demanding. Patients might also experience a temporary cool sensation at the injection site or a metallic taste if contrast dye is administered. For individuals with severe claustrophobia, open MRI machines, which have a less enclosed design, can offer a more comfortable alternative, reducing anxiety and allowing for better airflow and visibility.
Preparing for a Smoother MRI
To ensure a more comfortable MRI experience, discuss any anxieties, pain concerns, or claustrophobia with your doctor or the imaging center staff beforehand. They may suggest light sedation, like oral benzodiazepines (e.g., Xanax, Ativan, or Valium), to help you relax. If sedation is used, arrange for someone to drive you home. Wearing comfortable, loose-fitting clothing without metal components is also recommended, as metal items (jewelry, zippers, hairpins) must be removed before entering the scanner.
During the scan, utilize the provided earplugs or headphones, which can often play music, to mask the loud noises. Keeping your eyes closed or wearing an eye mask can reduce feelings of confinement by blocking the view of the scanner’s interior. Practicing relaxation techniques, such as deep breathing or visualization, can also help manage anxiety and promote stillness. Remember that you can communicate with the technologist via an intercom or call button if you experience any discomfort or need assistance.