5.2.3 - Imaging with EM Waves Flashcards
What within the body can be imaged with Gamma rays?
Problems with organs.
What problem can be located with gamma rays?
Underground pipe leaks.
How do gamma rays get inside your body?
Radioactive tracer injected in, this emits gamma rays.
What is a thermogram produced by?
A thermal imaging camera.
What does a thermogram show?
Regions of different temperatures.
When will skin emit more infrared?
When it is infected or injured.
What can therograms highlight?
Blood flow problems.
How does a thermogram work?
Absorbs infrared and computer adds colour.
What two things can X-rays be used for?
- Broken bones.
2. Airport security.
When does photographic paper darken?
When it absorbs X-rays.
Why do bones appear white on X-rays?
Because bones absorb X-rays so the rays do not reach the paper to darken it.
