Properties Of X Rays Flashcards
1
Q
Inverse square law
A
The more d2 increases the lower the intensity as area becomes bigger - inversely proportional
2
Q
What are the 3 possibilities of x ray interaction with matter
A
- attenuation
- scatter
- nothing
3
Q
How can a scatter be removed
A
By a grid
4
Q
what does attenuation do to x-ray beam
A
decreases intensity of x-ray beam and absorbs it
attenuation is absorption and weakens/ reduce force
5
Q
what is good for therapy and imaging
A
absorption
6
Q
what is bad for therapy and imaging
A
scattering
7
Q
when does ionisation occur
A
when some forms of radiation have sufficient energy to interact with atoms and eject their orbital electrons
8
Q
What does attenuation mean
A
- to weaken or reduce in force
- different materials attenuate the beam differently
