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An MRI (magnetic resonance imaging) scan is one of the most common tests your child may have. It uses a strong magnet and radio waves — not radiation — to make detailed pictures of the brain.

Key takeaways

An MRI does not hurt, but it is loud and requires staying very still.
Younger children are often given medicine to help them sleep through the scan.
Knowing what to expect can make the day feel more manageable for the whole family.

What the day often looks like

You will usually arrive ahead of the scan to check in and talk with the team. For many children, especially younger ones, a specialist gives medicine so they can rest comfortably and stay still, which helps produce clear images.

During the scan, the MRI machine makes loud knocking and buzzing sounds. Headphones or earplugs are common, and some centers offer music or video to help children feel more at ease.

If your child is not sedated, staying still is the most important part. Even small movements can blur the images, which sometimes means repeating part of the scan. Practicing “freeze like a statue” at home in the days before can help older children know what to expect.

Why an MRI is used

An MRI gives detailed pictures of the brain and surrounding structures, which helps the care team understand the location and characteristics of a tumor. Your child may have more than one MRI over time so the team can compare images and track changes. Each scan adds to the picture the team is building.

Some scans use a contrast agent, given through a small IV, that helps certain areas show up more clearly. The team will explain whether contrast is needed and answer any questions about it.

How to help your child prepare

Use simple, honest language about what will happen.
Ask whether your child can bring a comfort item.
Ask the team about eating and drinking rules before the scan.

Questions to ask your care team

Will my child need sedation or anesthesia for this scan?
How long will the scan take, and can I stay nearby?
When and how will we hear about the results?

Every imaging center is a little different, so your care team’s instructions always come first. For related reading, see our guides on diagnosis and what happens after results come back.

Your Child's First MRI: What to Expect