問題一覧
1
Aerial oxidation is controlled by the
preservative/ other answer Sodium sulfide
2
Which of the following automatic processing chemistries best controls the image on a radiograph n the density range that is most important?
phenidone
3
Which of the following is the highest atomic number?
tungsten
4
The term “Direct Exposure” would indicate an:
exposure without benefit of intensifying screen
5
Which of the following has been employed as a film base
cellulose nitrate
6
The term latent image actually refers to
undeveloped radiographic image
7
Present mammography film
are screen films
8
An ion is an atom
not electrically neutral
9
The supercoating usually consists of
gelatin
10
Which of the following will not be found in the developer?
clearing agent
11
What system that ensures uniform chemical distribution across the film and clean solution?
filtration
12
an easily observable difference between x-ray film and regular photographic film is the
thickness and rigidity of the base
13
With processing, the latent image becomes a(n) ______image.
manifest
14
The most common result of inadequate washing is
excess hyporetension
15
When comparing 35mm cine film with 16mm, the 35mm film has
four times the area
16
The formation of a latent image follows which interaction with the emulsion?
photoelectric
17
The preservative normally used in both the developer and the fixer is
sodium sulfite
18
Which of the following is something used as a developing agent.
phenidone
19
If film is stored near steam pipes, the most likely result in the processed radiograph will be
loss of contrast
20
Which of the following factors will always have an effect on recorded detail?
milliamperage
21
The component of the developer that helps to keep unexposed crystals from the developing agent is
potassium bromide
22
Which of the following is not important to proper storage of radiographic film?
shelf life is less than 3 months
23
What happens at the sensitivity speck?
secondary eletron are trapped
24
High contrast film have
smaller grain size
25
The wetting agent used in automatic processors is usually.
water
26
Low KVP produces which of the following?
high contrast few gray tones short scale contrast
27
When green emitting rare earth screens are used with properly matched film safelights are required.
red
28
The archival quality of a radiograph is principally
established during fixing
29
The principal purpose of gelatin in the emulsion is to
support silver halide crystal uniformly
30
Which of the following ingredients in the fixer functions as a stop bath?
activator
31
In a latent-image center becomes a collection of
silver atoms
32
The component of the developer that is most responsible for archival quality is
glutaraldehyde
33
x-ray film is sensitive
only to x and gamma rays and visible light heat,pressure or humidity SILVER BROMIDE - sensitive to light SILVER IODIDE - sensitive to x-rays
34
the radiographic film base appears blue
viewing the image is more pleasant
35
Afterglow is a property of intensifying screens that?
enhanced at high kVp
36
Development fog will increase when which of the following is abnormally low in the developer?
potassium bromide
37
Which of the following is unrelated to recorded detail
amount of thermionic emission
38
The interstitial atoms is a crystal of silver halide include.
silver,bromine and iodine
39
Which of the following ingredients of the developer is responsible for producing the blackest parts of a radiograph?
hydroquinone
40
Other factors being equal, a ___________ emulsion is fastest
large grain concentration
41
Which of the following is not at characteristic the technologist should consider when selecting film?
light emission
42
The latent image is actually formed in the
silver halide crystal
43
Which of the following curves always assumes some form of sigmoid shape
sensitometric characteristic H&D
44
What is the other term of detail clarity?
resolution
45
What is the most essential quality of the x-ay beam
penetration
46
Processing is necessary to convert
latent image to manifest image
47
What technical factor for cast and splints if fiber glass is being used?
no change
48
common base of contemporary x-ray film is
polyester
49
Which of the following is not a separate stage in automatic processing?
wetting
50
What do we call the radiation exiting the patient that is responsible for latent image formation?
remnant or exit radiation
51
The term sensitivity speck refers to
an emulsion contaminant
52
Which of the following will NOT fog film?
fringe magnetic fields
53
The most commonly employed radiographic image receptor is ______ film.
screen film
54
What cord is used to describe the ideal level of contrast that an image should have?
optimum
55
The latent image at the crystal level
collection of silver atoms
56
Which of the following ingredients is NOT normally found in the film emulsion?
Silver nitrate
57
If one observes a film immediately after exposure, what is seen
nothing
58
What terms are widely standardized in conventional use and should pose no problem to the Student?
contrast density
59
Calcium tungstate screens emit
blue light
60
What is the principal characteristics of emulsion that makes it particularly radiation Sensitive?
density
61
In a silver halide crystal, which of the following is missing an electron?
silver
62
In the manufacture of the emulsion, which of the following molecules is particularly light sensitive?
AgBR - Silver bromide
63
Which of the following is most likely to fog film?
improper safelight filter
64
The sensitivity speck is usually silver
sulfide
65
Hydroquinone and phenidone interact synergistically. Which of the following examples best describes a synergistic interaction?
drinking and driving
66
Given only one atom of each of the following, which is most likely to be involved with x-ray interaction
iodine
67
To minimize geometric blurring or unsharpness, what distance should be maximized?
source to image distance
68
The principal result of using rare earth screens with green-sensitive film is
reduce patient dose
69
In the manufacture of radiographic film
direct exposure film contains thicker emulsion layer and more silver halide crystal than screen film
70
Most rare earth screens emit
green light
71
The spectra response of an emulsion refers to its
absorption of visible light
72
During the photographic process, metallic silver accumulates at
latent image center or sensitivity speck
73
Orthochromatic film is sensitive to
green light
74
Which of the following can produce a radiopaque artifact?
dirty processor transport rollers
75
The latent image-center
forms at the sensitivity speck
76
Conversion of the latent image to a visible image occurs
when silver bromide is converted to silver
77
One hardener is
glutaraldehyde
78
At what stage in automatic processing is the latent-image made visible?
developing
79
Which of the following is a principal component of the radiographic emulsion?
Silver bromide or Silver iodide
80
Which of the following is NOT a heavy-metal filters?
molybdenum
81
Which of the following is usually thinner than 5um?
supercoating
82
The temperature of the wash water should be approximately
5 degrees F below the developer
83
The most commonly employed radiologic image receptor is
screen film
84
Which is the relationship of the depth of the radiotransparent space between the lead strips, To its width:
grid ratio
85
Following irradiation, a secondary electron will most likely interact with a silver ion to form a
silver atom
86
Dimensional stability is the property of maintaining the size and shape of the
base
87
A developer ingredient that controls pH is
sodium carbonate
88
Which of the following is a reducing agent?
metol
89
The two basic parts of radiographic film are
base and emulsion
90
As film screen system speed increase
radiographic density increase
91
Which of the following properties of silver halide is most important in the production of a latent image?
atomic number or sensitivity speck
92
Processing
required for formation of manifest image
93
The contrast of radiographic film
is inversely proportional to its latitude
94
Which of the following is also known as a subject contrast
anatomy pathology
95
Hypo retention refers to
thiosulfate left in the emulsion
96
Which of the following would be considered a film artifact?
pressure marks
97
The hardeners in a fixer
cause the emulsion to shrink
98
Which of the following term does not belong?
stop bath
99
Which of the following will not be found in the fixer?
glutaraldehyde
100
Compared with screen film, film that is manufactured for direct x-ray exposure.
thicker emlusion layer and more silver halide crystal