chapter 26 IR exposure

Question 1

Two photographic properties allow detail to be seen on radiographic images

Answer 1

IR exposure and contrast

Question 2

brightness controls what on the image

Answer 2

lightness and darkness

Question 3

is brightness related to IR exposure

Answer 3

no

Question 4

digital post processing that produces changes in the brightness

a) window width
b) window level

Answer 4

b

Question 5

Details not recorded on underexposed image is due to

Answer 5

quantum mottle/noise

Question 6

Digital post processing can eliminate excess information on overexposed image
a) T
B) F

Answer 6

T

Question 7

Underexposure versus overexposure which one is ideal

Answer 7

overexposure

Question 8

refers to the lack of sufficient incoming data for processing

a) ambient noise
b) quantum noise

Answer 8

b

Question 9

background radiation noise is called

a) ambient noise
b) quantum noise

Answer 9

a

Question 10

what is the primary controlling factor of IR exposure?

Answer 10

mAs

Question 11

does KVP and and mAs impact the Look up table?

Answer 11

no

Question 12

does KVP and mAs affect the histogram?

Answer 12

yes

Question 13

changes in mAs must be a minimum of what percent to have visible change in density

a) 45
b) 30
c) 50

Answer 13

30

Question 14

best way to control IR expoure is

a) kvp
b) mAs

Answer 14

b

Question 15

is change in KVP necessary to control image noise

Answer 15

no

Question 16

alters the intensity of radiation between the anode and cathode ends of the X-ray tube

Answer 16

anode heel effects

Question 17

objects with greatest subject density should should be place on which side

a) Cathode
b) anode

Answer 17

a

Question 18

subjects with lesser intensity should be placed under which side

a) cathode
b) anode

Answer 18

b

Question 19

The Ir variation exposure difference between cathode and anode is what percentage

Answer 19

45%

Question 20

m A s
k V p
I R sensitivity
S I D
Body part
Filtration
Heel effect
Grids
Focal spot
which one is the controlling and influencing factor?

Answer 20

mAs controlling, others are influencing

Question 21

on a humerus projection the shoulder and the elbow goes where on the tube of the anode heel effect?

a) elbow
b) shoulder

Answer 21

elbow- anode

shoulder- cathode

Question 22

in regards to IR exposure, is beam restriction inverse or direct relationship?

Answer 22

inverse

Question 23

digital receptor have a linear or non-linear response to exposure

Answer 23

linear

Question 24

film has a linear or non-linear response to exposure

Answer 24

non-linear

Question 25

additive pathology is radiopaque or radiolucent

Answer 25

radiopaque

Question 26

destructive pathology is radiopaque or radiolucent

Answer 26

radioloucent