| 400 QUESTIONS WITH VERIFIED DETAILED
ANSWERS | ALREADY GRADED A+
The layers of an intensifying screen in order are:
a. base, white reflecting layer, emulsion, protective coating
b. white reflecting layer, protective coating, active layer, base
c. base, white reflecting layer, active layer, protective coating
d. active layer, base, white reflecting layer, protective coating - answer-c. base,
white reflecting layer, active layer, protective coating
A material that gives off light when struck by x-ray photons is called:
a. silver bromide
b. a phosphor
c. an intensifier
d. a reflective laver - answer-b. a phosphor
In places where a large amount of radiation got through the patient's body, the
intensifying screen would give off _________ of light, and this area on the
radiograph would be developed as ________
a. a large amount, black
b. a small amount, white - answer-a. a large amount, black
,Which are the two main (most important) parts of an intensifying screen?
a. base and emulsion
b. base and active layer
c. emulsion and active layer
d. active and protective layer - answer-b. base and active layer
Delayed light emission of an intensifying screen after the x-ray photons have been
turned off is called:
a. afterburn
b. luminescence
c. fluorescehce
d. phosphorescence - answer-d. phosphorescence
Which one of these is the rain-drop phenomenon that causes a mottled
appearance on the radiograph arid is caused from using a intensifying screen that
is very fast.
a. afterglow
b. light diffusion
c. quantum mottle
d. fluorescence - answer-c. quantum mottle
Fast screens emit ________ light than slow screens.
a. more
b. less - answer-a. More
,Changing from a slower screen to a faster screen will have what effect on the
patient's radiation dose?
a. it will increase the dose
b. it will decrease the dose - answer-b. it will decrease the dose
The part of the active layer of an intensifying screen that produces light is the
a. white reflecting surface
b. protective coat
c. silver bromide
d. phosphor - answer-d. phosphor
An area of poor screen contact occurs
a. when there is a decreased distance between the screen and the film inside the
cassette m
b. when there is an increased distance between the screen and the film inside the
cassette - answer-b. when there is an increased distance between the screen and
the film inside the cassette
Changing from a slower screen to a faster screen will have what effect on density?
(Assuming no changes have been made in technique)
a. it will increase it
b. it will decrease it - answer-a. it will increase it
A relative speed value of 100 corresponds to a
, a. detail screen
b. slow speed screen
c. detail speed screen
d. high speed screen
e. par speed screen - answer-e. par speed screen
The ability of a material to give off light when struck by x-rays is called
a. afterglow
b. screen lag
c. fluorescence
d. phosphorescence
e. luminescence - answer-e. luminescence
Increasing the speed of an intensifying screen also increases
a. the patient's dose
b. contrast
c. light diffusion
d. recorded detail
e. Both b and c - answer-e. Both b and c
A test for poor screen contact is performed with which one of these devices?
a. a resolution grid
b. a radiographic phantom