X-ray interactions Flashcards
There are 2 forms of x-ray interactions, what are they?
Bremstrahlung and Characteristic
Bremstrahlung interactions occur where?
At the anode disk
Characteristic interactions occur where?
Elsewhere (find a better answer)
Why are they called characteristic interactions?
Because the energy released can be reliably predicted based on the atomic number of the material being irradiated.
Attenuation occurs in what 2 ways?
Absorption or scatter
What are the 3 possible interactions between x-ray photons and human tissue?
Transmission, photoelectric absorption, and compton scattering.
What type of photoelectric interaction is more likely with low-energy x-rays? Why?
Photoelectric absorption. X-ray photon doesn’t have enough energy to continue and is absorbed.
What type of photoelectric interaction is more common with high-energy x-rays?
Compton scattering
Photoelectric absorption is responsible for the color _____ on x-rays
white
Compton scattering is responsible for the color _____ on x-rays
grey
What is the number one source of technologist dose?
Compton scattering.
A higher KVP would cause more or less scatter?
More
As part thickness increases, scatter increases or decreases?
increases
Tighter collimation would cause more or less scatter?
Less.
What is the anode angle used in general radiography?
12 degrees
