P5.2.3 - Imaging with electromagnetic waves Flashcards
1
Q
What is a thermogram?
A
It shows regions of different temperatures and shows problems with blood flow in blood vessels
2
Q
How can X-rays be used for imaging?
A
- Bones absorb many X-rays
- Photographic film darkens when it absorbed X-rays and shows the details of the internal structure of a person
3
Q
What is computerised tomography?
A
A process of producing an image of the inside of a human body using a series of X-rays images and a computer
4
Q
How are gamma rays used for imaging?
A
A doctor injects a patient with a radioactive substances that emits gamma rays, called a tracer. The patient’s kidneys absorb the tracer
5
Q
What is a thermal imaging camera?
A
A camera with a film or sensor that detects infrared radiation
