P3 Medical imaging Flashcards
1
Q
Ultrasound
A
Sound with a frequency above 20,000Hz (20kHz)
2
Q
Ultrasound
A
is a longitudinal wave
3
Q
Ultrasound
A
used for pre-natal scanning, breaking down kidney stones and cleaning delicate instruments
4
Q
X rays
A
are Electromagnetic waves and are Transverse waves
5
Q
X rays
A
Are ionising and cause mutations to DNA
6
Q
X rays
A
Travel through skin
7
Q
X rays
A
are absorbed by dense objects like bone
8
Q
Ultrasound
A
Partially reflected inside body to produce an image
9
Q
CT scans
A
use thousands of x rays to produce a 3D image
10
Q
X rays
A
are used to treat cancer