Imaging

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smvanjoske10
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111873
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Imaging
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2012-01-04 23:13:32
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  1. Which of the following is a physical property of x-rays?

    A. travel in straight lines
    B. are vivisble in the dark
    C. may be deflected by magnets
    D. refract and reflect similar to visible light
    A. travel in straight lines
    (this multiple choice question has been scrambled)
  2. As the wavelength of x-ray photos shortens, the energy of the x-ray beam will

    A. stay the same
    B. lengthen
    C. decrease
    D. increase
    D. increase
    (this multiple choice question has been scrambled)
  3. The milliampere-seconds (mAs) settingan x-ray machine controls the

    A. wavelength of the beam
    B. speed of electrons emitted
    C. quality of the beam
    D. quantity of x-rays emitted
    D. quantity fo x-rays emitted
    (this multiple choice question has been scrambled)
  4. The kVp setting on an x-ray machine controls the

    A. quality of the x-ray beam
    B. quantity of x-ray beams
    C. nimber of electrone emitted
    D. focal spot size
    A. quality of the x-ray beam
    (this multiple choice question has been scrambled)
  5. During an exposure, electrons in the x-ray tube travel from the

    A. cathode to the anode
    B. anode to the cathode
    C. anode to the target
    D. cathode to the filament
    A. cathode to the anode
    (this multiple choice question has been scrambled)
  6. To the procedures x-rays, a great deal of energy in an x-ray tube is converted into heat. The ratio of heat generated to x-ray prodiction is generally considered to be
    a. 1%-99%
    b. 99%-1%
    c. 50%-50%
    d. 75%-25%
    B
  7. The acceleration of the electrons and their ultimate striking energy is determined by the
    a. millaperage (mA)
    b. kiloyoltage (kVp)
    c. milliamperage-seconds (mAs)
    d. exposure time (time)
    B
  8. When depressing teh "prep" switch on a rotating anode x-ray machine, you are effectively
    a. determining teh accelerationof the electrons
    b. taking the exposure
    c. heating up teh ofcal spot and spinning the rotating anode
    d. heating up the filament and spinning the rotating anode
    D
  9. Regarding teh production of x-rays in the x-ray tube, the
    a. purpose fo the anode is to provide a source of electrons
    b. target and focal spot are provided by the cathode
    c. cathode side fo the tube is positively charged, adn the anode is negatively charged.
    d. cathode includes the filament adn the focusing cup
    D
  10. What transformer in an x-ray machine controls the temperature of the filament
    a. step-up transformer
    b. step-down transformer
    c. autotransformer
    d. self-rectifying transformer
    B
  11. Teh heel effect is going to be more noticeable with
    a. larger film, longer focal-film distance, higher kVp
    b. larger film, shorter focal-film distance, and lower kVp
    c. smaller film, shorter focal-film distance, and higher kVp
    d. smaller film, longer focal-film distance, and lower kVp
    B
  12. Full-wave rectification means that
    a. the bottom half of alternating current is not used.
    b. the machine performs its own rectification
    c. 60 pulses of x-rays are produced per second
    d. 120 pulses of x-rays are prodeced per second
    D
  13. What is teh minumum distance in feet that a safelight in the darkroom should be away from teh work site
    a. 2
    b. 3
    c. 4
    d. 5
    C
  14. If using both blue- adn green-sensitive films, what type of safelight should you use
    a. amber
    b. blue
    c. green
    d. red
    D
  15. The main purpose fo the x-ray developer is to
    a. clear away the unexposed, undeveloped silver halide crystals
    b. convert teh exposed silve halide crystals into black metallic silver
    c. reduce the inexposed silver halide crystals into black metallic silver
    d. swell and soften the emulsion
    B
  16. The main purpose of the x-ray fixer is to
    a. clear away the inexposed, undeveloped silver halide crystals
    b. convert teh exposed silver halide crystals into black metallic silver
    c. reduce the unexposed silver halide crystals into black metallic silver
    d. swell and soften the emulsion
    A
  17. A safelight ilumination test was performed in the darkroom. On processing the film, you see various gradations of blackness on your film. The area xposed for the longest period fo time is
    a. green
    b. clear
    c. slightest gray
    d. darkest
    D
  18. After you manually process a film, you notice that there is a green area of about 1/2 inch along one narrow edge fo the film. This is due to the area not being
    a. developed
    b. fixed
    c. developed or fixed
    d. exposed to radiation
    C
  19. You notice that there is a clear line at the top of the shorter edge of the readiograph that you hace manually processed. This is due to the area not being
    a. developed
    b. fixed
    c. developed or fixed
    d. collimated
    A
  20. You are looking at a film that is totally clear except for a bit of blck that you notices along the edges. Your film has not been
    a. developed
    b. fixed
    c. developed or fixed
    d. exposure to radioation
    B
  21. The remaining silver halide crystals form exposed x-ray film are removed in the
    a. fixer
    b. developer
    c. wash water
    d. storage envelope
    A
  22. Which of the following would cause teh image on a processed x-ray film to be fogged
    a. two films in teh same cassette
    b. kVp too low
    c. film stored in an area of high room temperature
    d. focal-film distance too long
    C
  23. What should be the maximum intensity of the bulb in a safelight in developing rooms
    a. 2.5 watts
    b. 7.5 watts
    c. 15 watts
    d. 60 watts
    C
  24. A bullet fragment on a film appears as a
    a. black mark
    b. diffuse greenish gray area
    c. clear mark
    d. white mark
    D
  25. You have a film in front of you that is relatively clear edge all the way around teh radiograph. This is because of
    a. a light leak
    b. collimation
    c. not being developed or fixed
    d. overexposure to radiation
  26. A crease in the film after exposure but before processing will likely appear as a
    a. black creascent mark
    b. white crecent mark
    c. clear crescent mark
    d. diffuse grayish black area
    A
  27. Safelight fogging on a radiograph appears as a
    a. black mark
    b. white mark
    c. clear mark
    d. diffuse grayish area
    D
  28. The cells that are most susceptible to the hazards of ionizing radiation are
    a. the rapdily dividing cells of the intestinal lining, neoplastic cells, and gonad cells
    b. teh connective tissue cells of bone, cartilage, and tendons
    c. teh rapidly dividing cells of bone, lymphatics, skin and leukocytes adn hemopoietic cells
    d. all of the cells of the body
    A
  29. A sievet (Sv) is the
    a. film badge that contains lithium flouride compounds
    b. radiation that occurs when the primary beam interacts with matter
    c. unit of radiationdose equivalent to the absobed dose in tissue
    d. unit fo absorbed dose imparted by ionizing radiation
    C
  30. A radiation film badge worn at the collar level
    a. determines th etype of radiation exposure
    b. monitors exposure of the thyroid gland adn lenses of the eyes
    c. monitors teh primary beam
    d. informs everyone you are radiographing an animal
    B
  31. When taking radiographs, you should whenever possible use
    a. increased exposure time, decreased distance from radiation sources, and increased shielding
    b. increased exposure time, increaed distance from radiation sources, adn increased shielding
    c. decreased exposure time, increased distance form radiation sources, adn increased shielding
    d. decreased exposure time, increased distance from radiation sources, adn decreased shielding
    C
  32. There is a gloved had visible on a radiograph. This is
    a. not a problem, beacuse shielding protects you from primary radiation
    b. not a problem, becauseshielding protects you from secondary radiation
    c. an intersting artifact that appears black
    d. a real concern, becauseteh hand has been exposed to radiation
    D
  33. A small filament produces an image of
    a. equal detail to a large filament
    b. Lesser detail to a large filament
    c. greater detail than a large filament
    d. greater intensity than a large filament
    C
  34. you are preparing to take a radiograph, and you wnat to confirm that you have set the correct mAs of 15. Which of the following scenarios will give you 15 mAs
    a. 300 mA and 1/10 sec
    b. 300 mA and 1/20 sec
    c. 150 mA and 1/15 sec
    d. 150 mA and 1/20 sec
    B
  35. If you were going to decrease the focal-film distance from 100 cm to 50 cm, what should your new mAs be if the old mAs was 16?
    a. 2.0 mAs
    b. 4.0 mAs
    c. 8 mAs
    d. 32 mAs
    B
  36. Scatter radiaition on a film is more noticeable if there is
    a. lower kVp, thicker patient, and larger field size
    b. lower kVp, thinner patient, and smaller field size
    c. hihger kVp, thicker patient, and smaller field size
    d. higher kVp, thinner patient, and larger field size
    D
  37. To get more density on afilm, you should do what to the kVp and mAs?
    a. decrease one and increase the other
    b. decrease both
    c. increase either or both
    d. only increase kVp, because mAs does not affect density
    C
  38. Sante's rule states that when setting up a technique chart, you shoulduse what base kVp for the abdomne?
    a. (2 x thickness [cm]) + 100
    b. (2 x thickness [cm]) +40
    c. (2 x thickness [in]) + 100
    d. (2 x thickness [in]) + 40
    B
  39. Because of the relationship between millamp(mA) and mAs, as you increase the mA, you can
    a. decrease the length of th eexposure, so that there is less chance fo movement
    b. decrease the length of the exposure, so that there is more chanec os movement
    c. increase the length fo the exposure, so that there is more chance of movement
    d. increase the kVp, which means no charge in density
    A
  40. The crystals of high speed screens, as compared to similar types of par screens, are
    a. bigger, and there is less details
    b. bigger, adn there is more detail
    c. smaller, and there is more detail
    d. smaller, and there is less detail
    A
  41. The main advantage of fast-speed screensand films is that
    a. the films can be processed more quickly
    b. X-rays can directly affect the film without flourescing the screens
    c. lower exposure factors can be used, when can allow use of a smaller focal spot
    d. the system is not as costly
    C
  42. If using rare-earth screens, what spectrum of light must the film be sensitive to
    a. blue range
    b. green range
    c. violet range
    d. red range
    B
  43. you are looking at a radiograph that appears gray overall. This is best described as a
    a. high-contrast film with few steps but large changes between each step
    b. high-contrast film with many steps but small changes between each step
    d. low-contrast film with many steps but few changes between each step
    D
  44. A radiograph in front of you apperas dark. You note that the bones are gray. You are best to do what for the next radiograph
    a. decrease kVp
    b. decrease mAs
    c. it really does matter which setting you decrease
    d. increase kVp or mAs
    A
  45. Grid cutoff can be decribed as
    a. the improvment of scatter noted with the use of one grind over another
    b. notusing the grid when exposing a tabletop radiograph
    c. incorrect use of the grid, so that the grid absorbs more radiation than it should
    d. incorrect use of the grid, so that the grid absorbs less radiation than it should
    C
  46. You have taken a radiograph using 10 Mas and 60 kVp. To double the radiographic density for a second film, you should use
    a. 100 mA, 1/5sec, 66 kVp
    b. 150 mA, 1/10 sec, 60 kVp
    c. 200 mA, 1/10 sec, 60 kVp
    d. 300 mA, 1/10 sec, 60 kVp
    C
  47. You want to set up an abdominal radiography technique shart. All of the following factors should be standardized except
    a. whether to use a grid
    b. the type of film used
    c. focal-film distance
    d. the kVp used
    D
  48. Low mAs, high kVp technique are recommended for abdominal radiography in dogs, because they
    a. produce radiographs wiht higher contrast
    b. produce radiographs with lower contrast
    c. require increased exposure times
    d. do not necessitate use of a grid
    B
  49. A grid with a ratio of 10:1 absorbs
    A. less scatterradiation and requires less exposurefactors than a 5:1 grid
    b. less scatter radiation adn requires greater exposure factors than a 5:1 grid
    c. more scatter radiation and requires greater exposure factors than a 5:1 grid
    d. more scatter radiation and requires less exposure factors than a 5:1 grid
    C
  50. A dog laying in left lateral recumbancy for a pelvis radiograph. Tha right femur will be
    a. less magnified because of increase focal-film distance adn decreased object-film distance
    b. less magnified becuase of decreased focal-film distance and increased objective-film distance
    c. more magnified because o fdecreased focal-filmdistance adn increased objective-film distance
    d. more magnified because increasd focal-film distance and drecreased objective-film distance
    C
  51. In a lateral pelvic projection, the affected limb should be
    a. closest to teh film and pulled slightly caudally
    b. closest to the film and pulled slightly cranially
    c. farthest from the film adn pulled slightly cranially
    d. farthest from the film adn pulled slightly caudally
    B
  52. The term dorsomedial-plantarolateral oblique is in referance to the
    a. metatarsus
    b. stifle
    c. metatarsus and stilfe
    d. carpus
    A
  53. The term dorsomesial-plantarolateral oblique means that the x-ray beamis directed at the
    a. dorsal limb aspect, and the film is against the medial side of the limb.
    b. dorsal limb aspect, and the film is against the lateral side of the limb
    c.plantar limb aspect, and the film is against the medial side of the limb
    d. plantar limb aspect, and the film is against the lateral side of the limb
    B
  54. For the proper radiographic exposure, a radiograph should be taken during maximum
    a. expiration for the abdomen and inspiration for the thorax
    b. expiration for the thorax and inspiration for the abdomen
    c. expiration for the thorax and abdomen
    d. inspiration for the thorax and abdomen
    A
  55. The best view of the elbow is
    a. dorsopalmar
    b. palmarodorsal
    c. caudocranial
    d. craniocaudal
    D
  56. The peripheral borders for an albow radiograph are
    a. 1/3 of the radius/ulna adn 1/3 of the humerus
    b. 1/3 of the tibia/fibula adn 1/3 of the femur
    c. 2/3 of the bones distal and proximal
    d. the carpus and the shoulder joint
    A
  57. The cranial and caudal borders for a lateral abdomen should be
    a. the thirteenth rib dn th ecrainal aspect of the wings of the ilium
    b. the eighth rib and femoral head
    c. the scapulohumeral articulation and L7
    d. the last rib adn th efirst coccygeal vertebra
    B
  58. The best view for tympanic bullae is
    a. lateral
    b. open-mouthed ventrodorsal
    c. open-mouthed rostrocaudal
    d. dorsovantral olique
    C
  59. For a Dorsoventral (DV) view of the entire skull, you should center the primary beam
    a. at eh medial canthi on the bridge fo the nose
    b. between the ears
    c. at the highest point of the zygomatic arch
    d. between lateral canthi on sagittal crest
    D
  60. To ensure that your DV radiograph for the skull is parallel and perpendicular, you should try to have
    a. an imaginary line drawn between the medial canthi parallel to the film
    b. an impaginary line drawn between the medial canthi perpendicualr to the film
    c. the nose pointing to the front of the cassette
    d. the ears parallel with each other
    A
  61. You are required to take intraoral radiographs of the teeth of a Labrador. You are to use your regular x-ray machine, because you do not have a dental machinein th efacility. The animal is anesthetized. You should use
    a. nonscreen
    b. Hi-plus screens
    c. rare-earth screens
    d. an increased object-film distance
    A
  62. For cervical studies you should center the primary beam at
    a. C7 to C8
    b. the atlas
    c. the axis
    d. C3 to C4
    D
  63. The femurs in a hip dyplasia view appear foreshortened. This is likely due to not having the
    a. femurs kept stationary
    b. tube head perpendicular to the cassette and the femurs
    c. femurs perpendicular to the cassette
    d. femurs parallel to the cassette
    D
  64. Positive contrast media are considered to be
    a. radiopaque, which means it will be white on a processed film
    b. radiopaque, which means it will be dark on a processed
    c. radiolucent, which means it will be white on a processed film
    d. radiolucent, which means it will be dark on a processed film
    A
  65. The triiodinated compound that is least irritating to the gastrointestinal (GI) tissues and has less toxicity is the
    a. sodium diatrizoic salt
    b. sodium metrizoic salt
    c. meglumine diatrizoic salt
    d. oily iodine solution
    C
  66. The positive contrast compound that does not influence the movement of fliud through the intestinal wall is
    a. barium sulfate preparation
    b. high osmolar triiodinated compound
    c. meglumine diatrizoic salt
    d. sodium diatrizoic salt
    A
  67. The vet suspects a perforation of the small bowel in a 9-year-old lethargic German Shepherd adn wishes to confirm her diagnosis via a special positive contrast study. What positive contrast media would you use because it is the least irritating to the peritoneum?
    a. barium sulfate
    b. triiodinated compound
    c. carbon dioxide
    d. room air
    B
  68. Angiography consists of a bolus injection of iodinated contrast media into the
    a. lymphatic system
    b. biliary system
    c. respiratory system
    d. vascular system
    D
  69. An intravenous pyelogram (IVP) is also referred to as a(n)
    a. cystogram
    b. gastrogram
    c. excretory urogram
    d. esophagram
    C
  70. An upper GI study is performed to evalutate
    a. esophagus adn stomach
    b. stomach and small intestine
    c. large intestine
    d. stomach
    B

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