Preparing Your Child for Medical Imaging

Children may need imaging for many reasons - a suspected fracture from a fall, investigating recurring tummy pain, checking growth and development, or monitoring a known condition.

The most common paediatric imaging tests are X-rays and ultrasounds, which are quick and painless. CT and MRI are less common but may be needed for more complex conditions.

Your child's doctor will recommend imaging only when the information it provides will help with their care. If you have questions about why a scan has been requested, don't hesitate to ask - your doctor will be happy to explain.

How you prepare your child depends on their age:

• Toddlers (1-3 years): Keep explanations very simple and close to the appointment time. "We're going to take a special photo of your arm so the doctor can help it feel better." • Pre-schoolers (3-5 years): Explain 1-2 days before. Use simple, honest language. "A friendly person will take a picture of the inside of your tummy using a special camera. It won't hurt." • School-age (6-12): Explain a few days ahead. Give details about what will happen step by step. Let them ask questions. • Teenagers: Give them all the information and involve them in the process. Acknowledge that it's OK to feel nervous.

For all ages: avoid using words like "hurt," "needle," or "shot" unless specifically relevant. Focus on what they will see, hear, and do.

• Bring a comfort item - a favourite toy, blanket, or book can help younger children feel safe • Arrive early - rushing increases anxiety for everyone. Give yourself time to settle in. • Stay calm yourself - children pick up on parental anxiety. If you're relaxed, they're more likely to be too. • Bring snacks and a drink - especially if there's a waiting period. Hungry children are cranky children. (Check with the clinic first if fasting is required.) • Dress them in easy, metal-free clothing - avoid zippers, snaps, and jeans. Tracksuit pants and a t-shirt are ideal. • Bring headphones or a tablet - for older children during wait times, and some MRI centres allow music during the scan. • Let the radiographer lead - they're experienced with children and know how to position and distract them. Follow their guidance.

Staying still is the biggest challenge for young children during imaging:

• X-rays: Very quick (seconds). Most children can stay still with parental support. • Ultrasound: The sonographer can work with some movement. Distraction with a video or toy usually works well. • CT scan: Fast (a few minutes) but requires stillness. Wrapping in a blanket and timing the scan during a nap can work for babies. • MRI: Takes 20-60 minutes and requires complete stillness. Young children (usually under 6-7) may need sedation or a general anaesthetic for MRI.

If sedation is needed, the clinic will explain the process, risks, and preparation (usually fasting). A paediatric anaesthetist or nurse sedationist will monitor your child throughout. Sedation for imaging is very safe and routine.

Children are more sensitive to radiation than adults because their cells are dividing more rapidly. This means doctors are particularly careful about ordering imaging that involves radiation for children:

• X-rays and CT use ionising radiation - doctors use the lowest dose possible (paediatric protocols) • Ultrasound and MRI use no radiation - they're preferred for children when they can provide the needed information

Modern imaging equipment has specific paediatric settings that significantly reduce radiation dose. Clinics that regularly image children are experienced in using the lowest dose needed.

The ALARA principle (As Low As Reasonably Achievable) is strictly followed. Your child's doctor will only order a scan involving radiation when the clinical benefit clearly outweighs the tiny risk.

In most cases, yes! Policies vary by scan type:

• X-ray: A parent can usually stay in the room (wearing a lead apron) to help position and comfort the child. • Ultrasound: Parents are welcome to stay and watch the screen. • CT scan: You may be able to stay in the room (with a lead apron) but will need to step behind a screen during the actual scan (a few seconds). • MRI: You can stay in the room if you have no metal implants or devices. You'll be given earplugs or headphones.

If you're pregnant, you won't be able to stay in the room during scans involving radiation (X-ray, CT). Let the clinic know in advance so they can arrange an alternative support person.

The radiographers are wonderful with children and will do their best to make the experience positive for your whole family.