Image production

Question 1

measurement of systems ability to transfer pt info to IR

Answer 1

MTF

Question 2

Detective quantum efficiencies, measurement of systems ability to convert x-ray intensity to electronic signal

Answer 2

DQE

Question 3

what is used to remove soft waves (low energy photons) and reduce pt dose

Answer 3

filtration

Question 4

an increase in beam intensity toward the cathode end and a decrease in intensity toward the anode end

Answer 4

anode heel effect

Question 5

area of image sharpness

Answer 5

umbra

Question 6

area of unsharpness surrounding the image

Answer 6

blur or penumbra

Question 7

what is the acceptable amount of magnification

Answer 7

1.1 to 1.3

Question 8

what are the 2 types of pt motion

Answer 8

voluntary (respiration) and involuntary (peristalsis)

Question 9

what are the 2 types of distortion

Answer 9

size distortion and shape distortion

Question 10

angulation of the tube, the part, or the image receptor (and motion) are which type of distortion

Answer 10

shape distortion

Question 11

changes to OID and SID cause which type of distortion

Answer 11

size distortion