This test is run by .
Note that your final mark will not be saved in the system.
Note that your final mark will not be saved in the system.
Medical imaging MatchUp
Target Level
C
Running Total
0
0%
Attempt
1 of 3
Click on a top box, then click on its match below. Or, drag a top box and drop it onto the correct match. Match all pairs before clicking ‘Check’.
CAT scan
Photomultiplier tube
Contrast medium
Pair-production
Acoustic impedance
Photoelectric effect
Doppler effect
PET scan
Ultrasound
Attenuation
Simple scatter
The loss of intensity of X-rays as they pass through matter
X-rays changing direction due to interacting with atoms; mechanism of reducing X-ray intensity
Atoms absorbing X-rays, causing electrons to be liberated; mechanism of reducing X-ray intensity
An X-ray producing an electron-positron pair in the vicinity of a nucleus; mechanism of reducing X-ray intensity
Material opaque to X-rays such as barium or iodine, used to increase quality of X-ray image
Many consecutive X-rays taken along planes, built into a single image
Medical imaging technique using β⁺ emitters. The β⁺ particles annihilate with electrons, producing two gamma rays at 180°, which are detected
Component of a gamma camera, converts a single gamma photon into a cascade of electrons which is a signal that can be detected
Imaging technique using sound waves with a frequency >20 kHz
The resistance of a material to the propagation of sound waves
The change in a wave's frequency due to the motion of a wave source relative to a detector