STUDENT REVIEW QUESTION SET K CR/DR CONTENT AREA
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1 STUDENT REVIEW QUESTION SET K CR/DR CONTENT AREA RADT 2913 COMPREHENSIVE REVIEW 1
2 The CR cassette is backed by aluminum that: A. reflects x-rays B. absorbs x-rays C. captures the image D. transmits x-rays 2
3 The CR cassette is backed by aluminum that: A. reflects x-rays B. absorbs x-rays C. captures the image D. transmits x-rays 3
4 Which one of the following serves to protect against static buildup, dust collection, and mechanical damage to the imaging plate? A. Aluminum backing B. Lightweight plastic C. Felt material D. Cassette front 4
5 Which one of the following serves to protect against static buildup, dust collection, and mechanical damage to the imaging plate? A. Aluminum backing B. Lightweight plastic C. Felt material D. Cassette front 5
6 Which of the following is the layer of the imaging plate that traps electrons during exposure? A. Protective B. Reflective C. Active D. Support 6
7 Which of the following is the layer of the imaging plate that traps electrons during exposure? A. Protective B. Reflective C. Active D. Support 7
8 Which imaging plate layer absorbs stimulating light and reflects emitted light? A. Active B. Color C. Reflective D. Backing 8
9 Which imaging plate layer absorbs stimulating light and reflects emitted light? A. Active B. Color C. Reflective D. Backing 9
10 The reflective layer: A. absorbs and reduces static B. gives the imaging sheet strength C. protects the back of the cassette D. sends light in a forward direction 10
11 The reflective layer: A. absorbs and reduces static B. gives the imaging sheet strength C. protects the back of the cassette D. sends light in a forward direction 11
12 The purpose of the barcode label is to identify the: A. imaging plate B. patient C. technologist D. radiographic room 12
13 The purpose of the barcode label is to identify the: A. imaging plate B. patient C. technologist D. radiographic room 13
14 The phosphor layer is made of phosphors from the what family? A. Barium sulfate B. Halide calcium C. Barium fluorohalide D. Calcium fluorohalide 14
15 The phosphor layer is made of phosphors from the what family? A. Barium sulfate B. Halide calcium C. Barium fluorohalide D. Calcium fluorohalide 15
16 When the imaging plate is irradiated, stimulated electrons enter which of the following layers? A. Active B. Conductive C. Protective D. Support 16
17 When the imaging plate is irradiated, stimulated electrons enter which of the following layers? A. Active B. Conductive C. Protective D. Support 17
18 The signal trapped in the phosphor center: A. is never completely lost B. remains for a few minutes C. remains for a few seconds D. is instantaneously released 18
19 The signal trapped in the phosphor center: A. is never completely lost B. remains for a few minutes C. remains for a few seconds D. is instantaneously released 19
20 During laser beam formation, both ends of the laser reflect energy back and forth so that the atoms: A. absorb each other B. bombard each other C. lose energy D. create x-ray energy 20
21 During laser beam formation, both ends of the laser reflect energy back and forth so that the atoms: A. absorb each other B. bombard each other C. lose energy D. create x-ray energy 21
22 Coherent light is formed by the laser because the photons: A. are at right angles to each other B. travel in all directions C. travel in the same direction D. are at varying frequencies 22
23 Coherent light is formed by the laser because the photons: A. are at right angles to each other B. travel in all directions C. travel in the same direction D. are at varying frequencies 23
24 The optical mirror in the reader: A. directs the laser beam to the imaging plate surface B. forms the laser beam into a circle C. causes the laser beam to diverge D. creates the laser beam 24
25 The optical mirror in the reader: A. directs the laser beam to the imaging plate surface B. forms the laser beam into a circle C. causes the laser beam to diverge D. creates the laser beam 25
26 Typical cassette throughput is: A. 5 cassettes/min B. 25 cassettes/min C. 25 cassettes/hour D. 50 cassettes/hour 26
27 Typical cassette throughput is: A. 5 cassettes/min B. 25 cassettes/min C. 25 cassettes/hour D. 50 cassettes/hour 27
28 The device that moves the laser rapidly back and forth across the imaging plate is known as: A. beam optics B. laser scanner C. beam deflector D. optical mirror 28
29 The device that moves the laser rapidly back and forth across the imaging plate is known as: A. beam optics B. laser scanner C. beam deflector D. optical mirror 29
30 Each light photon is assigned a number during: A. amplification B. sampling C. digitization D. laser scanning 30
31 Each light photon is assigned a number during: A. amplification B. sampling C. digitization D. laser scanning 31
32 The power source for the laser must be: A. oscillating B. constant C. preheated D. cold 32
33 The power source for the laser must be: A. oscillating B. constant C. preheated D. cold 33
34 The wavelength of the CR reader laser is: A. 336 nm B. 366 nm C. 633 nm D. 636 nm 34
35 The wavelength of the CR reader laser is: A. 336 nm B. 366 nm C. 633 nm D. 636 nm 35
36 In what type of pattern does the laser scan the imaging plate? A. Raster B. Horizontal C. Circular D. Random 36
37 In what type of pattern does the laser scan the imaging plate? A. Raster B. Horizontal C. Circular D. Random 37
38 The process of scanning the moving imaging plate is known as: A. transition B. raster scanning C. digitization D. translation 38
39 The process of scanning the moving imaging plate is known as: A. transition B. raster scanning C. digitization D. translation 39
40 Which of the following does not determine CR resolution? A. pixel size B. laser scan speed C. the number of pixels D. phosphor layer thickness 40
41 Which of the following does not determine CR resolution? A. pixel size B. laser scan speed C. the number of pixels D. phosphor layer thickness 41
42 Imaging plates should be erased every: A. day B. week C. month D. year 42
43 Imaging plates should be erased every: A. day B. week C. month D. year 43
44 CR imaging plates are erased by flooding the plate with: A. light B. radiation C. electrons D. phosphors 44
45 CR imaging plates are erased by flooding the plate with: A. light B. radiation C. electrons D. phosphors 45
46 Each square in a matrix is called a: A. bit B. byte C. matrix element D. picture element 46
47 Each square in a matrix is called a: A. bit B. byte C. matrix element D. picture element 47
48 The number of bits per pixel is known as bit: A. pitch B. depth C. height D. width 48
49 The number of bits per pixel is known as bit: A. pitch B. depth C. height D. width 49
50 If a pixel has a bit depth of 29, the number of gray tones that pixel can produce is: A. 256 B. 512 C D
51 If a pixel has a bit depth of 29, the number of gray tones that pixel can produce is: A. 256 B. 512 C D
52 The amount of detail present in any image is known as: A. contrast resolution B. density thickness C. spatial resolution D. optical visibility 52
53 The amount of detail present in any image is known as: A. contrast resolution B. density thickness C. spatial resolution D. optical visibility 53
54 The imaging plate reader uses a laser to scan the imaging plate, releasing the energy stored in the conductive layer as what type of light? A. Infrared B. Ultraviolet C. White D. Blue 54
55 The imaging plate reader uses a laser to scan the imaging plate, releasing the energy stored in the conductive layer as what type of light? A. Infrared B. Ultraviolet C. White D. Blue 55
56 The higher the number of pixels in a matrix, the: A. higher the image resolution B. lower the image resolution C. lack of effect on image resolution D. smaller the image 56
57 The higher the number of pixels in a matrix, the: A. higher the image resolution B. lower the image resolution C. lack of effect on image resolution D. smaller the image 57
58 Selecting the incorrect body part from the examination menu may result in: A. no image B. image misinterpretation C. proper density and contrast D. no difference in image sharpness 58
59 Selecting the incorrect body part from the examination menu may result in: A. no image B. image misinterpretation C. proper density and contrast D. no difference in image sharpness 59
60 The k-edge of phosphor imaging plates ranges from: A. 10 to 30 kev B. 20 to 40 kev C. 30 to 50 kev D. 40 to 60 kev 60
61 The k-edge of phosphor imaging plates ranges from: A. 10 to 30 kev B. 20 to 40 kev C. 30 to 50 kev D. 40 to 60 kev 61
62 The range of kilovoltage peak that can be used with CR is: A. 45 to 120 kvp B. 55 to 130 kvp C. 65 to 120 kvp D. 75 to 130 kvp 62
63 The range of kilovoltage peak that can be used with CR is: A. 45 to 120 kvp B. 55 to 130 kvp C. 65 to 120 kvp D. 75 to 130 kvp 63
64 Milliamperage-seconds (ma-s) is selected for the: A. shortest time possible B. longest time possible C. number of electrons needed D. amount of penetration needed 64
65 Milliamperage-seconds (ma-s) is selected for the: A. shortest time possible B. longest time possible C. number of electrons needed D. amount of penetration needed 65
66 When insufficient light is produced by the imaging plate phosphor, the image will: A. not be formed B. be grainy C. be dark D. be detailed 66
67 When insufficient light is produced by the imaging plate phosphor, the image will: A. not be formed B. be grainy C. be dark D. be detailed 67
68 Quantum mottle is caused by: A. excessive milliampere-seconds B. excessive kilovoltage peak C. insufficient distance D. insufficient light 68
69 Quantum mottle is caused by: A. excessive milliampere-seconds B. excessive kilovoltage peak C. insufficient distance D. insufficient light 69
70 Grid use for CR examinations is more critical than in film/screen radiography because CR: A. examinations produce more scatter B. imaging plates record more densities C. imaging plates record less scatter D. examinations requires much higher kilovoltage peak values 70
71 Grid use for CR examinations is more critical than in film/screen radiography because CR: A. examinations produce more scatter B. imaging plates record more densities C. imaging plates record less scatter D. examinations requires much higher kilovoltage peak values 71
72 Using an imaging plate that is much larger than the part being examined will: A. increase resolution B. decrease the size of the matrix C. decrease the sampling rate D. decrease resolution 72
73 Using an imaging plate that is much larger than the part being examined will: A. increase resolution B. decrease the size of the matrix C. decrease the sampling rate D. decrease resolution 73
74 The moiré artifact results when grid lines and scanning laser are: A. not perpendicular B. not parallel C. parallel D. oscillating 74
75 The moiré artifact results when grid lines and scanning laser are: A. not perpendicular B. not parallel C. parallel D. oscillating 75
76 The number of grid lines per centimeter or lines per inch describes grid: A. frequency B. ration C. focus D. size 76
77 The number of grid lines per centimeter or lines per inch describes grid: A. frequency B. ration C. focus D. size 77
78 Grid ratio describes the: A. number of grid lines per centimeter or lines per inch B. angling of the lead strips to coincide with x-ray beam diversion C. relationship between the height of the lead strips to the interspace D. physical size of the grid to be used for each distance measured 78
79 Grid ratio describes the: A. number of grid lines per centimeter or lines per inch B. angling of the lead strips to coincide with x-ray beam diversion C. relationship between the height of the lead strips to the interspace D. physical size of the grid to be used for each distance measured 79
80 Which of the following require more critical beam centering? A. Parallel grids B. Focused grids C. Low-ration grids D. Low-frequency grids 80
81 Which of the following require more critical beam centering? A. Parallel grids B. Focused grids C. Low-ration grids D. Low-frequency grids 81
82 Collimation to a smaller area: A. increases scatter B. increases amount of tissue irradiated C. decreases resolution D. decreases Compton interactions 82
83 Collimation to a smaller area: A. increases scatter B. increases amount of tissue irradiated C. decreases resolution D. decreases Compton interactions 83
84 Shuttering, a postexposure image manipulation technique, is: A. placed on the patient B. placed on the cassette C. added to the screen image D. changes the amount of scatter 84
85 Shuttering, a postexposure image manipulation technique, is: A. placed on the patient B. placed on the cassette C. added to the screen image D. changes the amount of scatter 85
86 A histogram is: A. an examination of the chest B. a graphic representation of x-ray exposure C. a report on exposure values D. another name for exposure indicator value 86
87 A histogram is: A. an examination of the chest B. a graphic representation of x-ray exposure C. a report on exposure values D. another name for exposure indicator value 87
88 In automatic data recognition, data is recognized: A. in a zigzag pattern B. in a parallel, vertical pattern C. from the center out D. from the edges in 88
89 In automatic data recognition, data is recognized: A. in a zigzag pattern B. in a parallel, vertical pattern C. from the center out D. from the edges in 89
90 The latitude value of the histogram is fixed, using a small reading area in: A. fixed mode B. multiple manual mode C. automatic mode D. semiautomatic mode 90
91 The latitude value of the histogram is fixed, using a small reading area in: A. fixed mode B. multiple manual mode C. automatic mode D. semiautomatic mode 91
92 The data recognition mode in which there is no histogram analysis is the: A. fixed mode B. multiple manual mode C. automatic mode D. semiautomatic mode 92
93 The data recognition mode in which there is no histogram analysis is the: A. fixed mode B. multiple manual mode C. automatic mode D. semiautomatic mode 93
94 Dark line artifacts can be caused by: A. dirt on the light guide in the plate reader B. double exposure C. cracks in the imaging plate D. scatter through the back of the cassette 94
95 Dark line artifacts can be caused by: A. dirt on the light guide in the plate reader B. double exposure C. cracks in the imaging plate D. scatter through the back of the cassette 95
96 Horizontal white lines may be caused by: A. dirt on the light guide in the plate reader B. double exposure C. cracks in the imaging plate D. scatter through the back of the cassette 96
97 Horizontal white lines may be caused by: A. dirt on the light guide in the plate reader B. double exposure C. cracks in the imaging plate D. scatter through the back of the cassette 97
98 To avoid the moiré grid artifact, how must the grid be oriented to the plate reader s laser scan direction? A. Perpendicular B. Parallel C. Superior D. Inferior 98
99 To avoid the moiré grid artifact, how must the grid be oriented to the plate reader s laser scan direction? A. Perpendicular B. Parallel C. Superior D. Inferior 99
100 Fine white lines appearing on a hard copy of the image may be caused by: A. dirt on the light guide in the plate reader B. double exposure C. cracks in the imaging plate D. debris on the mirror in the laser printer 100
101 Fine white lines appearing on a hard copy of the image may be caused by: A. dirt on the light guide in the plate reader B. double exposure C. cracks in the imaging plate D. debris on the mirror in the laser printer 101
102 102
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