Medical applications of physics

?
  • Created by: Megan
  • Created on: 22-03-13 21:37
What is Ultrasound?
Ultrasound is sound with a frequency too high for humans to hear (over 20,000 Hz).
1 of 6
What is an x-ray?
High frequency, short wavelength electromagnetic waves which are used in hospitals for medical diagnosis, e.g. bone fractures, dental problems.
2 of 6
What are CT scans?
X-ray images are taken from a number of angles, a computer processes the results to from a 3D image of that body part.
3 of 6
How do CT scans work?
The patient is put inside a cylindrical scanner, and an x-ray beam is fired through the body from an x-ray tube and picked up by detectors on the opposite side. The tube and detectors are rotated during the scan. A computer generates a 2D image.
4 of 6
What happens to ultrasound when it hits a media?
When an ultrasound waves passes through one medium to another some of the wave gets reflected off the boundary between the two media and some is transmitted (and refracted). This is partial refraction.
5 of 6
How does an ultrasound scan work?
jgui
6 of 6

Other cards in this set

Card 2

Front

What is an x-ray?

Back

High frequency, short wavelength electromagnetic waves which are used in hospitals for medical diagnosis, e.g. bone fractures, dental problems.

Card 3

Front

What are CT scans?

Back

Preview of the front of card 3

Card 4

Front

How do CT scans work?

Back

Preview of the front of card 4

Card 5

Front

What happens to ultrasound when it hits a media?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Physics resources:

See all Physics resources »See all Medical Physics resources »