One of the most important instructions during an MRI scan is to stay as still as possible. While it may seem difficult to remain in one position, staying still helps the MRI machine capture clear and accurate images.
This article explains why it is important to stay still during an MRI and what happens if you move.
Why Is Staying Still Important?
An MRI (Magnetic Resonance Imaging) machine takes detailed cross-sectional pictures (slices) of the inside of your body. Unlike a rapid photo snapshot, MRI data is acquired gradually over several minutes per sequence.
Even small movements can create motion artifacts (ghosting or blurring), making it harder for the radiologist to detect subtle tears, tiny tumours, nerve compressions, or blood vessel abnormalities. Crisp images ensure your doctor makes an accurate diagnosis and starts the correct treatment plan.
What Happens If You Move?
If you move during the scan:
- The diagnostic images become blurred or distorted.
- The technologist must discard the sequence and repeat it from the start.
- The total scan duration increases.
- Subtle medical conditions might be obscured.
For the fastest and most accurate results, try to remain as relaxed and still as you can until the technologist announces that the scan is finished.
How Long Do You Need to Stay Still?
The total duration depends on the body region examined. Most standard MRI scans last between 15 to 45 minutes.
However, you do not need to hold completely rigid for 45 continuous minutes. Scans are broken down into several shorter sequences lasting between 1 and 5 minutes each. Between these bursts of sound, you will have brief pauses where you can take a relaxed breath.
What If You Need to Cough or Sneeze?
If you feel an irresistible urge to cough, sneeze, or swallow deeply, try to let the technologist know over the intercom before the next sequence starts, or squeeze your call button.
The technologist can pause the scanner, let you clear your throat or take a deep breath, and restart the sequence cleanly.
What If You Have Pain or Muscle Spasms?
Some patients find remaining in one position painful, especially those with severe sciatica, disc herniation, or frozen shoulder.
Tell the MRI team before the scan begins if:
- You have severe back or neck pain.
- You cannot lie completely flat.
- You suffer from muscle tremors or spasms.
- You have severe joint stiffness.
The technologist can position specialized memory foam pads, angled knee wedges, and arm rests to remove pressure from painful joints and ensure maximum comfort.
Tips to Help You Stay Still
Here are practical techniques to make stillness effortless:
- Settle In Before Starting: Make sure you are 100% comfortable on the table before the technologist leaves the room. Ask for an extra pillow or knee support if needed.
- Keep Your Eyes Closed: Closing your eyes right at the start prevents visual restlessness and helps your body relax.
- Rhythmic Breathing: Focus on slow, gentle breaths into your abdomen.
- Listen to Music: Music helps distract the mind and pass the time faster.
- Mental Exercises: Count backwards or visualize a peaceful memory to keep your brain calm.
What About Young Children?
Young children often find it challenging to stay motionless for extended periods. Depending on the child's age and scan requirements:
- Technologists may use mock MRI practice runs or 'space adventure' framing.
- A parent is often allowed into the scan room to hold the child's hand (after passing metal safety screening).
- Mild sedation or feed-and-sleep protocols may be arranged with a pediatric specialist if necessary.
Final Thoughts
Staying still during an MRI is essential for producing clear, accurate images. Movement can blur the pictures, increase the scan time, and sometimes require parts of the scan to be repeated. If you are worried about staying still because of pain, anxiety, or another reason, let the MRI staff know before the scan. They can help make you as comfortable as possible and guide you throughout the procedure.