Ch. 8 Image Production

Question 1

a device that receives the radiation leaving the patient

Answer 1

image receptor

Question 2

the absorption characteristics of the anatomic part are determined by what

Answer 2

composition - thickness, anatomic number, and tissue density

Question 3

compactness of the cellular structures

Answer 3

tissue density

Question 4

the difference between the x-ray photons that are absorbed photoelectrically and those that penetrate the body

Answer 4

differential absorption

Question 5

reduction in the energy or number of photons in the primary x-ray beam as it passes through anatomic tissue

Answer 5

attenuation

Question 6

what two distinct processes occur during beam attentuation in the diagnostic range

Answer 6

absorption and scattering

Question 7

when does complete absorption of the incoming x-ray photon occur

Answer 7

when it has enough energy to remove an inner-shell electron

Question 8

what is an ejected electron caused by an incoming photon knocking it out of its shell called

Answer 8

photoelectron

Question 9

the ability to remove electrons

Answer 9

ionizing

Question 10

incoming photon knocks out an inner shell electron from orbit and also expends all of its energy in doing so and gets totally absorbed

Answer 10

photoelectric effect

Question 11

what does the probability of total photon absorption during photoelectric effect depend on

Answer 11

energy of the incoming photon and the atomic number of the anatomic tissue involved

Question 12

when incoming photons are not absorbed but instead lose energy during interactions with the atoms composing the tissue

Answer 12

scattering

Question 13

scatter results from the diagnostic x-ray interaction with matter known as what

Answer 13

Compton effect

Question 14

what is the ejected outer shell electron caused from an incoming photon called

Answer 14

Compton electron or secondary electron