問題一覧
1
Which of the following would NOT be included in the principal geometric factors affecting Radiographic quality
collimation
2
What law is used to compensate technique so that density is maintained when distance Changes?
square law
3
A very workable rule of thumb for this relationship is “Every four centimeters of thickness Affects by what factor?
2
4
Which of the following is the main determinant is selecting a focal spot size?
milliamperage
5
High spatial resolution is affected principally by which of the following?
focal spot size
6
Radiographic elongation of a part is usually caused by
tube angulation
7
What principle is applied to measure the art and skill of the radiographer?
exposure
8
What light is the flow of small boundless of energy?
quanta
9
What factor directly affects density, through not in a directly proportional relationship?
kVp
10
Which of the following factors is (are) used in the production of a radiograph
size ability to cooperate equipment limitation
11
The most common form of image noise in radiography is fogging of the film by random radiation known as
quantom mottle
12
Penumbra is synonymous with which of the following?
blur
13
Which of the following would be most radiolucent as interspace material?
plastic fiber
14
it is the ability of a material to emit light in response to excitation.
luminescence
15
Which of the following states that beveling the anode at angles steeper, or more nearly Vertical, than 45 degrees will cause the effective focal spot to be smaller than the actual Focal spot?
line focus principle
16
Any impertinent, grossly distorted or false information which obscure the useful details in an image may be offered to as
artifact
17
What film is often referred to as being standard, medium or fast speed?
radiographic
18
The amount of light that is emitted or scattered by a surface maybe referred to as;
luminance
19
The most practical form of silver reclamation for most diagnostic application is
metallic replacement
20
Luminescence is a process that
involves outer-shell electrons
21
When the focal spot in an x-ray tube undergoes a change in size with age or high mA. The effect is known as:
blooming
22
Wire mesh tests on intensifying screens should be performed at least.
semiannual
23
An acceptable radiograph is made with the large focal spot. If the examination were repeated with the small focal spot using the same technique
the image would be sharper
24
As beam restriction increases.
density decreases
25
As the amount beam filtration is increased:
contrast decreases
26
What are the components of a grid?
Pb (lead) strips and Al (aluminum) interpacers
27
Which of the following items is NOT necessary for constructing and H and D curve?
spinning top
28
What is the other term of logarithm of opacity?
density
29
As film screen system sensitivity decreases.
radiographic density decrease
30
What is the simplest of all beam restricting devices both in design and in application?
aperture diaphragm
31
Which of the following devices will reduce radiographic contrast?
filters
32
Which of the following will change the shape of the x-ray emission spectrum?
exposure time
33
Which type of filter material should be used with a molybdenum target x-ray tube?
molybdenum
34
Why is a direct exposure film not recommend for modern day radiography?
increase patient exposure
35
Short scale contrast is defined by:
more contrast
36
What is the other term for flood replenishment?
timed
37
Which of the following equipment(s) is primarily responsible to evaluate technical factor exposure, film, intensifying screen processing
sensitometer
38
Which of the following does NOT affect image unsharpness?
kVp
39
What material is used for cassettes to reduce attenuation by up to 50% and permits a corresponding reduction in patient dose?
graphite
40
What material is used to amplify the incoming x-ray beam and reduce patient radiation dose?
intensifying screen
41
It is the misrepresentation of the size or shape of the structure of interest.
distortion
42
What beam restricting device is equipped with an extension sleeve which can expand or collapse to vary the degree of beam
cylinder
43
Long scale contrast is defined by:
less contrast
44
Which of the following equipment is required to produce a uniform range of densities on a Film:
penetrometer sensitometer
45
The term “good contrast is often applied to
high contrast
46
The fifteen percent rule status that increasing the kVp by 15% is equivalent to:
doubling the mAs
47
A definition of radiographic contrast would be:
Probable relationship between one density and another
48
What is the principal characteristic of the emulsion that makes it particularly radiation sensitive?
sensitivity speck or density
49
Which of the following theories best explains the photographic effect?
gurney-mott
50
A spotty, salt and pepper effect on a radiograph caused by low levels of radiation intensity is called what?
quantom mottle
51
When was the first roller transport processor was made commercially available by the Kodak Company?
early 1950’s
52
What term is measured by the ability to see pairs of lines?
resolution
53
Which of the following does NOT contribute to image distortion:
focal spot size
54
The anatomic part must be precautions against leaks and overflow?
drainage
55
When discussing intensifying screens, which one of the following statements is true?
they fluoresce but not phosphoresce
56
Which factor principally degrade the visualization of low contrast structures on a properly exposed radiograph?
patient motion
57
Which of the following artifacts is most likely to occur before processing?
small blur in otherwise sharp radiograph
58
Which of the following would principally reduce the production of scatter radiation?
a decrease in kVp
59
What equipment is required to provide an accurate reading if the amount of light Transmitted through the film?
penetrometer
60
The sharpness of detail in a radiograph is best increased by the use of
small effective focal spot
61
What is an indication of the precise wavelength of light emitted by the phosphor?
spectra emission
62
Which of the following is considered greatest problems in radiographic quality?
focal film distance
63
Assuring good screen-film contact also assures reduced in
blur
64
Which of the following would be most acceptable grid strip material from the standpoint of x-ray attenuation?
tungsten
65
Radiographic film / screen system resolution is generally controlled by which of the following
size of intensifying crystals
66
Which of the following does not found in an intensifying screen?
refractive layer
67
Which of the following cannot be determined by an H and D curve or a processor control chart?
recorded detail
68
A radiograph emerges from a processor with numerous dark, treelike or branching artifacts The most likely cause
static electricity
69
What is the largest and most complex system in an automatic processor?
transport
70
Non flammable polyester is also known as:
film base
71
What is the objective analysis of film response to photon exposure and development?
sensitometry
72
What is the fundamental factor in the development process?
time
73
What is the most common result if inadequate washing?
excess hypo retention
74
Which of the following steps in manual processing in INCORRECT?
fix for only roughly 80 sec. at 4 mins
75
What is the percentage of the silver is normally dissolved in the fixer solution during film processing?
50%
76
What is the advisable time/period to change processing solutions in an automatic Processor?
every 1 month
77
What solution / aid is used as wetting agent to reduce the surface tension of water and to Eliminate drying marks?
detergent
78
Synergism is also known as.
superadditivity
79
Proper dark room ventilation should include _______ Room changes of air per hour.
8 to 10 degree celsius
80
What is the stage of processing involves a synergistic reaction?
developing
81
What is the simplest and least expensive method of silver reclamation?
metallic replacement method
82
Film should be stored at a temperature range between:
14 degree to less than 24 degree celsius
83
What process which tends to increase the sensitivity of the emulsion?
digestion
84
What term is often erroneously substituted for direct exposure technique?
nonscreen
85
A 10 degree temperature change can be compensated for by adjusting development time by a factor of
2
86
What part of the transport system that removes excess moisture from the film surface?
squeegee
87
Cold water processor is also known as
thermostatically controlled system
88
After a predetermined processing period, which one is halted when the film is placed in the fixer
development
89
What are the active ingredients for developers solution?
reducers
90
Replenishment tanks should have close-fitting lids primarily
to control aerial oxidation
91
What is the approximate developer condition in a 90-second processor?
95°F. 22s
92
What rollers are usually phenolic?
dryer
93
Which segment of the circulation system is most important to archival quality?
fixation
94
What chemical having a high alkaline or hydroxide potential (OH-)?
sodium hydroxide
95
What type of film is sensitive to the fluorescent light of x-ray intensifying screens?
screen
96
What is the primary control for manual development?
agitation
97
How many years an original radiograph is stores?
5-7 years
98
What artifacts cause by raised nick on roller scratching film as it passes by?
pi lines
99
Which system of the automatic processor consumes the greatest amount of electrical Power?
dryer
100
What is the other term used for Radiographic Quality or Definition?
detail clarity
問題一覧
1
Which of the following would NOT be included in the principal geometric factors affecting Radiographic quality
collimation
2
What law is used to compensate technique so that density is maintained when distance Changes?
square law
3
A very workable rule of thumb for this relationship is “Every four centimeters of thickness Affects by what factor?
2
4
Which of the following is the main determinant is selecting a focal spot size?
milliamperage
5
High spatial resolution is affected principally by which of the following?
focal spot size
6
Radiographic elongation of a part is usually caused by
tube angulation
7
What principle is applied to measure the art and skill of the radiographer?
exposure
8
What light is the flow of small boundless of energy?
quanta
9
What factor directly affects density, through not in a directly proportional relationship?
kVp
10
Which of the following factors is (are) used in the production of a radiograph
size ability to cooperate equipment limitation
11
The most common form of image noise in radiography is fogging of the film by random radiation known as
quantom mottle
12
Penumbra is synonymous with which of the following?
blur
13
Which of the following would be most radiolucent as interspace material?
plastic fiber
14
it is the ability of a material to emit light in response to excitation.
luminescence
15
Which of the following states that beveling the anode at angles steeper, or more nearly Vertical, than 45 degrees will cause the effective focal spot to be smaller than the actual Focal spot?
line focus principle
16
Any impertinent, grossly distorted or false information which obscure the useful details in an image may be offered to as
artifact
17
What film is often referred to as being standard, medium or fast speed?
radiographic
18
The amount of light that is emitted or scattered by a surface maybe referred to as;
luminance
19
The most practical form of silver reclamation for most diagnostic application is
metallic replacement
20
Luminescence is a process that
involves outer-shell electrons
21
When the focal spot in an x-ray tube undergoes a change in size with age or high mA. The effect is known as:
blooming
22
Wire mesh tests on intensifying screens should be performed at least.
semiannual
23
An acceptable radiograph is made with the large focal spot. If the examination were repeated with the small focal spot using the same technique
the image would be sharper
24
As beam restriction increases.
density decreases
25
As the amount beam filtration is increased:
contrast decreases
26
What are the components of a grid?
Pb (lead) strips and Al (aluminum) interpacers
27
Which of the following items is NOT necessary for constructing and H and D curve?
spinning top
28
What is the other term of logarithm of opacity?
density
29
As film screen system sensitivity decreases.
radiographic density decrease
30
What is the simplest of all beam restricting devices both in design and in application?
aperture diaphragm
31
Which of the following devices will reduce radiographic contrast?
filters
32
Which of the following will change the shape of the x-ray emission spectrum?
exposure time
33
Which type of filter material should be used with a molybdenum target x-ray tube?
molybdenum
34
Why is a direct exposure film not recommend for modern day radiography?
increase patient exposure
35
Short scale contrast is defined by:
more contrast
36
What is the other term for flood replenishment?
timed
37
Which of the following equipment(s) is primarily responsible to evaluate technical factor exposure, film, intensifying screen processing
sensitometer
38
Which of the following does NOT affect image unsharpness?
kVp
39
What material is used for cassettes to reduce attenuation by up to 50% and permits a corresponding reduction in patient dose?
graphite
40
What material is used to amplify the incoming x-ray beam and reduce patient radiation dose?
intensifying screen
41
It is the misrepresentation of the size or shape of the structure of interest.
distortion
42
What beam restricting device is equipped with an extension sleeve which can expand or collapse to vary the degree of beam
cylinder
43
Long scale contrast is defined by:
less contrast
44
Which of the following equipment is required to produce a uniform range of densities on a Film:
penetrometer sensitometer
45
The term “good contrast is often applied to
high contrast
46
The fifteen percent rule status that increasing the kVp by 15% is equivalent to:
doubling the mAs
47
A definition of radiographic contrast would be:
Probable relationship between one density and another
48
What is the principal characteristic of the emulsion that makes it particularly radiation sensitive?
sensitivity speck or density
49
Which of the following theories best explains the photographic effect?
gurney-mott
50
A spotty, salt and pepper effect on a radiograph caused by low levels of radiation intensity is called what?
quantom mottle
51
When was the first roller transport processor was made commercially available by the Kodak Company?
early 1950’s
52
What term is measured by the ability to see pairs of lines?
resolution
53
Which of the following does NOT contribute to image distortion:
focal spot size
54
The anatomic part must be precautions against leaks and overflow?
drainage
55
When discussing intensifying screens, which one of the following statements is true?
they fluoresce but not phosphoresce
56
Which factor principally degrade the visualization of low contrast structures on a properly exposed radiograph?
patient motion
57
Which of the following artifacts is most likely to occur before processing?
small blur in otherwise sharp radiograph
58
Which of the following would principally reduce the production of scatter radiation?
a decrease in kVp
59
What equipment is required to provide an accurate reading if the amount of light Transmitted through the film?
penetrometer
60
The sharpness of detail in a radiograph is best increased by the use of
small effective focal spot
61
What is an indication of the precise wavelength of light emitted by the phosphor?
spectra emission
62
Which of the following is considered greatest problems in radiographic quality?
focal film distance
63
Assuring good screen-film contact also assures reduced in
blur
64
Which of the following would be most acceptable grid strip material from the standpoint of x-ray attenuation?
tungsten
65
Radiographic film / screen system resolution is generally controlled by which of the following
size of intensifying crystals
66
Which of the following does not found in an intensifying screen?
refractive layer
67
Which of the following cannot be determined by an H and D curve or a processor control chart?
recorded detail
68
A radiograph emerges from a processor with numerous dark, treelike or branching artifacts The most likely cause
static electricity
69
What is the largest and most complex system in an automatic processor?
transport
70
Non flammable polyester is also known as:
film base
71
What is the objective analysis of film response to photon exposure and development?
sensitometry
72
What is the fundamental factor in the development process?
time
73
What is the most common result if inadequate washing?
excess hypo retention
74
Which of the following steps in manual processing in INCORRECT?
fix for only roughly 80 sec. at 4 mins
75
What is the percentage of the silver is normally dissolved in the fixer solution during film processing?
50%
76
What is the advisable time/period to change processing solutions in an automatic Processor?
every 1 month
77
What solution / aid is used as wetting agent to reduce the surface tension of water and to Eliminate drying marks?
detergent
78
Synergism is also known as.
superadditivity
79
Proper dark room ventilation should include _______ Room changes of air per hour.
8 to 10 degree celsius
80
What is the stage of processing involves a synergistic reaction?
developing
81
What is the simplest and least expensive method of silver reclamation?
metallic replacement method
82
Film should be stored at a temperature range between:
14 degree to less than 24 degree celsius
83
What process which tends to increase the sensitivity of the emulsion?
digestion
84
What term is often erroneously substituted for direct exposure technique?
nonscreen
85
A 10 degree temperature change can be compensated for by adjusting development time by a factor of
2
86
What part of the transport system that removes excess moisture from the film surface?
squeegee
87
Cold water processor is also known as
thermostatically controlled system
88
After a predetermined processing period, which one is halted when the film is placed in the fixer
development
89
What are the active ingredients for developers solution?
reducers
90
Replenishment tanks should have close-fitting lids primarily
to control aerial oxidation
91
What is the approximate developer condition in a 90-second processor?
95°F. 22s
92
What rollers are usually phenolic?
dryer
93
Which segment of the circulation system is most important to archival quality?
fixation
94
What chemical having a high alkaline or hydroxide potential (OH-)?
sodium hydroxide
95
What type of film is sensitive to the fluorescent light of x-ray intensifying screens?
screen
96
What is the primary control for manual development?
agitation
97
How many years an original radiograph is stores?
5-7 years
98
What artifacts cause by raised nick on roller scratching film as it passes by?
pi lines
99
Which system of the automatic processor consumes the greatest amount of electrical Power?
dryer
100
What is the other term used for Radiographic Quality or Definition?
detail clarity