Medical imaging principles — X-ray, CT, MRI

What you'll learn

1. 1

   Imagine you're looking at a bag of crisps in the dark with a torch. The torch shows the outline of the crisps inside — that's like an X-ray!

2. 2

   Why do bones show up white on an X-ray?

3. 3

   Here's an X-ray of a hand. The dark areas are soft tissue (flesh), and the white areas are the bones. Can you see the knuckles?

4. 4

   How is a CT scan different from an X-ray? Let's think step by step.

5. 5

   What does a CT scan give you that a normal X-ray cannot?

6. 6

   MRI uses a giant magnet and radio waves — no radiation at all! It makes soft tissues like muscles and the brain look super clear.

7. 7

   Drag the correct imaging method to each description: best for bones, best for soft tissues, no radiation.

8. 8

   Which imaging method uses a strong magnetic field and radio waves?