X-rays let doctors see what's going on inside a person's body — like if a bone is broken and how badly. These tests are quick and painless. You'll just need to sit still for a minute or two as the image is taken. Back to Articles Related Articles Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2021 KidsHealth®. All rights reserved. Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.