X-Ray Interactions with Matter Flashcards
1
Q
photoelectric absorption
A
photon in – electron out (cascade effect causes characteristic photon that gets absorbed)
ionization occurs
2
Q
coherent scatter
A
photon in – photon out (same energy, different direction)
no ionization
3
Q
Compton scatter
A
photon in – electron & photon out
ionization occurs
4
Q
coherent scatter affects…
A
image quality (scatter, more noise)
-does not affect
patient dose
occupational dose
5
Q
photoelectric absorption affects…
A
patient dose (ionization in the body) image quality (attenuation, higher contrast)
-does not affect
occupational dose
6
Q
Compton scatter affects…
A
patient dose (ionization in the body)
image quality (more scatter, more noise)
occupational dose (most common cause of radiation exposure to tech)
