RADIOGRAPHER ONLINE EXAM PRACTICE KIT 13

RADIOGRAPHER ONLINE EXAM PRACTICE KIT 13

Time limit: 0

Question Summary

0 of 100 questions completed

Questions:

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15
  16. 16
  17. 17
  18. 18
  19. 19
  20. 20
  21. 21
  22. 22
  23. 23
  24. 24
  25. 25
  26. 26
  27. 27
  28. 28
  29. 29
  30. 30
  31. 31
  32. 32
  33. 33
  34. 34
  35. 35
  36. 36
  37. 37
  38. 38
  39. 39
  40. 40
  41. 41
  42. 42
  43. 43
  44. 44
  45. 45
  46. 46
  47. 47
  48. 48
  49. 49
  50. 50
  51. 51
  52. 52
  53. 53
  54. 54
  55. 55
  56. 56
  57. 57
  58. 58
  59. 59
  60. 60
  61. 61
  62. 62
  63. 63
  64. 64
  65. 65
  66. 66
  67. 67
  68. 68
  69. 69
  70. 70
  71. 71
  72. 72
  73. 73
  74. 74
  75. 75
  76. 76
  77. 77
  78. 78
  79. 79
  80. 80
  81. 81
  82. 82
  83. 83
  84. 84
  85. 85
  86. 86
  87. 87
  88. 88
  89. 89
  90. 90
  91. 91
  92. 92
  93. 93
  94. 94
  95. 95
  96. 96
  97. 97
  98. 98
  99. 99
  100. 100

Information

Hi, Welcome to Radiographer Exam Practice

You have already completed the Exam before. Hence you can not start it again.

Exam is loading...

You must sign in or sign up to start the Exam.

You have to finish following Exam, to start this Exam:

Results

0 of 100 questions answered correctly

Your time:

Time has elapsed

You have reached 0 of 0 points, (0)

Average score
 
 
Your score
 
 

Categories

  1. Not categorized 0%
Your result has been entered into leaderboard
Loading
maximum of 100 points
Pos. Name Entered on Points Result
Table is loading
No data available
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10
  11. 11
  12. 12
  13. 13
  14. 14
  15. 15
  16. 16
  17. 17
  18. 18
  19. 19
  20. 20
  21. 21
  22. 22
  23. 23
  24. 24
  25. 25
  26. 26
  27. 27
  28. 28
  29. 29
  30. 30
  31. 31
  32. 32
  33. 33
  34. 34
  35. 35
  36. 36
  37. 37
  38. 38
  39. 39
  40. 40
  41. 41
  42. 42
  43. 43
  44. 44
  45. 45
  46. 46
  47. 47
  48. 48
  49. 49
  50. 50
  51. 51
  52. 52
  53. 53
  54. 54
  55. 55
  56. 56
  57. 57
  58. 58
  59. 59
  60. 60
  61. 61
  62. 62
  63. 63
  64. 64
  65. 65
  66. 66
  67. 67
  68. 68
  69. 69
  70. 70
  71. 71
  72. 72
  73. 73
  74. 74
  75. 75
  76. 76
  77. 77
  78. 78
  79. 79
  80. 80
  81. 81
  82. 82
  83. 83
  84. 84
  85. 85
  86. 86
  87. 87
  88. 88
  89. 89
  90. 90
  91. 91
  92. 92
  93. 93
  94. 94
  95. 95
  96. 96
  97. 97
  98. 98
  99. 99
  100. 100
  1. Unanswered
  2. Answered
  3. Review
  1. Question 1 of 100
    1. Question
    1 points

    Attenuation:

    Correct

    Incorrect

    Explanation:

    These changes may include absorption and scatter radiation.Radiation that  emerges from the patient is called exit radiation

  2. Question 2 of 100
    2. Question
    1 points

    Which photon tissue interaction makes radigraphy possible because of its creation of contrast?

     

    Correct

    Incorrect

    Explanation:

    Photoelectric interaction produces contrast as aresult of the incoming x-ray photons of the body ‘s tissues.Rays are completly absorbed in some areas of the patient.Choice A and b are types of scattering.Pair production does not occur in radiography.

  3. Question 3 of 100
    3. Question
    1 points

    Which photon tissue interaction produces radiation that may expose others in the room during fluroscopy?

    Correct

    Incorrect

    Explanation:

    Compton interaction produces scattered photons that emerge from the patient in divergent path and expose the radiographer of radiologist.The photoelectric effect is responsible for total absorption of the incoming x-ray photon during attenuation.Coherent scattering and pair production occur when x-ray energies are beyond the moderate rate used in radiograophy.

  4. Question 4 of 100
    4. Question
    1 points

    The traditional unit of absorbed dose is:

    Correct

    Incorrect

    Explanation:

    RAD stands for radiation absorbed dose.The gray in the SI ,not the traditional unit of absorbed dose.The Curie   is the traditional unit of radioactivity. The coulombs/ kilogram is the SI unit of radiation exposure in the air.

  5. Question 5 of 100
    5. Question
    1 points

    The traditional unit of activity is

     

    Correct

    Incorrect

    Explanation:

    The Curie  used primarily in nuclear medicine,is the traditional unit of radioactivity.Becquerel SI unit of radioactivity,gray SI unit of absorbed dose.The radiation weighting factor is a value used to adjust the absorbed dose amount to compensate for the greater damage caused by some ionizing radiation

  6. Question 6 of 100
    6. Question
    1 points

    Measurement of positive and negative particles created when ionizes atoms in the air helps define the:

    Correct

    Incorrect

    Explanation:

    The roentgen is the traditional measure of in-air exposure.Curie  is a traditional unit of radioactivity.Becquerel measures radioactivity,gray measures absorbed dose

  7. Question 7 of 100
    7. Question
    1 points

    Linear energy transfer:

    Correct

    Incorrect

    Explanation:

    LET varies because of different level of ionization.It occurs with high ionization radiation such as neutrons & alpha particles ,as well asduring x-ray & gamma ray procedures.

  8. Question 8 of 100
    8. Question
    1 points

    The unit of curie would be used in what imaging modality?

    Correct

    Incorrect

    Explanation:

    The curie measures the quantity of radioactive material

  9. Question 9 of 100
    9. Question
    1 points

    Graph that shows the relationship between radiation received and the organism’s response are called:

    Correct

    Incorrect

    Explanation:

    This describes  a dose -response curve, such as linear non- threshold.The H and D are characteristic curves represent the relationship between radiation exposure & optical density.

  10. Question 10 of 100
    10. Question
    1 points

    Medical x-rays are an example of:

    Correct

    Incorrect

    Explanation:

    Medical x-rays are an artificial source of ionizing radiation; diagnostic procedures account for the largest source of artificial radiation exposure to humans.Natural background radiation is contained in the environment

  11. Question 11 of 100
    11. Question
    1 points

    Cataractogenesis does not occur at low levels of radiation exposure,it is best expressed by which of the following dose-response relationships?

    Correct

    Incorrect

    Explanation:

    There is a  ,definite safe, or threshold dose at which cataractogenesis does not occur.Occupational dose is the amount of radiation to which radiographer are exposed.

  12. Question 12 of 100
    12. Question
    1 points

    Increased dose equals increased probability of effects best describes which of the following?

    Correct

    Incorrect

    Explanation:

    Be sure to review stochastic and nonstochastic ,deterministic and probabalistic.The severity ,not the probabilty, of nonstochastic effects increases with increased dose. direct effect and indirect effect differentiate whether the inital ionizing event occurs on the most radiosensitive molecule or on another molecule.

  13. Question 13 of 100
    13. Question
    1 points

    The cumulative occupational exposure for a 22-year old radiographer is:

    Correct

    Incorrect

    Explanation:

    Occupational cumulative exposutre is determined by multiplying years of age times 1 rem

  14. Question 14 of 100
    14. Question
    1 points

    The annual effective dose limit for the general public,assuming frequency exposure is:

    Correct

    Incorrect

    Explanation:

    The limit is important to keep in mind when considering ALARA

  15. Question 15 of 100
    15. Question
    1 points

    The secondary productive barrier used in room shielding must be at least how thick?

    Correct

    Incorrect

    Explanation:

    Lead , not aluminium equivalent will absorb most of the scatter radiation energy. Because of the secondary barrier is located where only scatter or leakage occur ,1/32 inch lead equivalent is sufficient .Primary barrier requires 1/16 inch leaqd equivalent

  16. Question 16 of 100
    16. Question
    1 points

    The intensity of the scattered beam is 1/1000 the intensity of the primary beama at  a …………… angle  1m from the patient

    Correct

    Incorrect

    Explanation:

    Photon lose considerable energy after scattering

  17. Question 17 of 100
    17. Question
    1 points

    If the radiation dose 6 feet from the x-ray table is 5R,what is the dose at a distance of 3 feet?

    Correct

    Incorrect

    Explanation:

    The dose is determined by inverse square law.The distance was halved ;therefore the dose went up 4 times

  18. Question 18 of 100
    18. Question
    1 points

    The minimum source to distance for fixed fluroscopes

    Correct

    Incorrect

    Explanation:

    The minimum source to skin distance for fixed fluroscopes is 15 inches; for portable fluroscopes, 12 inches.Be sure to review these required distances.

  19. Question 19 of 100
    19. Question
    1 points

    The use of gonadal shielding on female patients may reduce gonad dose by

    Correct

    Incorrect

    Explanation:

    Gonadal shielding  is more effective for females,reducing the gonad dose by up to 95%.

  20. Question 20 of 100
    20. Question
    1 points

    Cells that are oxygenated are more susceptible to radiation damage;this describes:

    Correct

    Incorrect

    Explanation:

    Target theory states that for acell to die after radiation exposure , its master or target molecule DNA must be inactivated.The doubling dose is the dose of radiation necessary to produce twice the frequency of genetic mutations as would have occured in tha absence of the radiation

  21. Question 21 of 100
    21. Question
    1 points

    The blood count is depressed after a whole-body dose equivalent of at least how many rads?

    Correct

    Incorrect

    Explanation:

    The dose equivalent at which blood count is depressed is much higher than diagnostic levels but may occur during radiation therapy.

  22. Question 22 of 100
    22. Question
    1 points

    Highly reactive ions that have unpaired electrons in the outershell are called:

    Correct

    Incorrect

    Explanation:

    This is the definition of free radicals,which can cause biologic damage to the cell.Some free radicals may chemically combine to form hydrogen peroxide.Radiolysis results in an ion pair in the cell: a positively charged water molecule and a free electron.

  23. Question 23 of 100
    23. Question
    1 points

    The process of somatic cell division is called:

    Correct

    Incorrect

    Explanation:

    Cytogenesis refers to the origin and development of cells.Spermatogenesis is the development of spermatoza. Organogenesis refers to the formation and differentiation of organs during embryonic development.Germcell division is called meiosis. 

  24. Question 24 of 100
    24. Question
    1 points

    The master molecule that directs cell activities is:

    Correct

    Incorrect

    Explanation:

    According to target theory, substantial research indicates that DNA,contained in the cellular nucleus, is the master molecule.Hydrogenperoxide is a poison that cause damage to the cell.A free radical is highly reactive ion with unpaired electrons in the outer shell. RNA transmits genetic instructions from the nucleus to the cytoplasm of the cell.

  25. Question 25 of 100
    25. Question
    1 points

    The most common effect from exposure to ionizing radiation is:

    Correct

    Incorrect

    Explanation:

    Although all of these effects may occur, the most common result of LET is no effect.However, ALARA must still be practiced

  26. Question 26 of 100
    26. Question
    1 points

    Most radiation -induced damage to cell occurs:

    Correct

    Incorrect

    Explanation:

    Adult nerve tissue and even immature cells, which are very radiosensitive,require doses of radiation higher than those used in medical diagnostic procedures,although ALARA must still be practiced

  27. Question 27 of 100
    27. Question
    1 points

    Radiation doses up to ………… are considered relatively low risk to the embryo and fetus

    Correct

    Incorrect

    Explanation:

    Doses lower than 50 to 20 still pose low risk to the embryo fetus, so ALARA must still be practiced

  28. Question 28 of 100
    28. Question
    1 points

    A concept of radiologic practice that encourages radiation users to adopt measures that keep the dose to the patient and themselves at minimum levels is called:

    Correct

    Incorrect

    Explanation:

    As low as reasonably achievable is a concept used in radiography to protect both the patient and the radiographer.

  29. Question 29 of 100
    29. Question
    1 points

    Which of the following is relatively insensitive of radiation?

    Correct

    Incorrect

    Explanation:

    Epithelialtissue and reproductive cells including immature sperm cells,are highly radiosensitive. On the other hand, adult nerve tissue requires very high dose to cause damage,although ALARA must still be practiced because once cells are damaged,repair may not take place.

      

     

     

  30. Question 30 of 100
    30. Question
    1 points

    Somatic effects of radiation:

    Correct

    Incorrect

    Explanation:

    In general these take large doses to manifest themselves

  31. Question 31 of 100
    31. Question
    1 points

    The best way to keep radiation dose to the patient low is:

    Correct

    Incorrect

    Explanation:

    Repeats double the dose to the patient for each exposure

  32. Question 32 of 100
    32. Question
    1 points

    X-rays may remove electrons from atom in the body by a process called:

    Correct

    Incorrect

    Explanation:

    This is what may cause harmful effects

  33. Question 33 of 100
    33. Question
    1 points

    Ionization  may cause:

    Correct

    Incorrect

    Explanation:

    Ionization is multifacted.

  34. Question 34 of 100
    34. Question
    1 points

    Cell damage may be exhibited as:

    Correct

    Incorrect

    Explanation:

    Cell damage may be exhibited as loss of function or abnormal function

  35. Question 35 of 100
    35. Question
    1 points

    Damage to the cell being irradiated is called:

    Correct

    Incorrect

    Explanation:

    Damage from somatic effects is evident in the organism being irradiated.Most of the time these effects are benign.Genetic damage is passed to the next generation

  36. Question 36 of 100
    36. Question
    1 points

    Radiation effects that show up in the next generation are called:

    Correct

    Incorrect

    Explanation:

    Somatic effects are evident in the organisms being irradiated.

  37. Question 37 of 100
    37. Question
    1 points

    Radiation that is contained in the environment is called:

    Correct

    Incorrect

    Explanation:

    There is no control over natural background radiation, which has been present in the environment since the formation of the universe.Choice A.B and D all refer to artificially produced radiation ,that made by humans.

  38. Question 38 of 100
    38. Question
    1 points

    Background radiation is the source of what present of human exposure?

    Correct

    Incorrect

    Explanation:

    Natural background radiation ,which has been present since the formation of the universe ,accounts for 50% of human exposure.The greatest single source is radon.

  39. Question 39 of 100
    39. Question
    1 points

    The annual effective dose per person from  natural background radiation is approximately:

    Correct

    Incorrect

    Explanation:

    You can assume the natural background radiation would below the annual recommended limits of exposure from diagnostic imaging.All choice are below this limit, choice B is correct. Background  exposure is not high but is always present. 

  40. Question 40 of 100
    40. Question
    1 points

    The greatest source of  natural background radiation to human is:

    Correct

    Incorrect

    Explanation:

    radon which exists as a gas ,account for 50% of human exposure to   natural background radiation

  41. Question 41 of 100
    41. Question
    1 points

    According to NCRP report #160, the increase in total exposure is primarily attributed to increase use of:

    Correct

    Incorrect

    Explanation:

    The huge increase in the use of CT since the 1980’s has primarily caused this increase.

  42. Question 42 of 100
    42. Question
    1 points

    According to NCRP report #160, interventional fluroscopy contributes approximately what amount to the annual dose to the population?

    Correct

    Incorrect

  43. Question 43 of 100
    43. Question
    1 points

    CT accounts for approximately what percent dose to the population?

    Correct

    Incorrect

  44. Question 44 of 100
    44. Question
    1 points

     Using data from NCRP Report #160, the typical dose for an upper GI is:

    Correct

    Incorrect

  45. Question 45 of 100
    45. Question
    1 points

    NCRP report #160 indicates the dose for an examination of the extremities is:

    Correct

    Incorrect

  46. Question 46 of 100
    46. Question
    1 points

    The smaller particle of an element that retains the characteristics of the element is a(n):

    Correct

    Incorrect

  47. Question 47 of 100
    47. Question
    1 points

    Atomic mass refers to:

    Correct

    Incorrect

  48. Question 48 of 100
    48. Question
    1 points

    X-ray travel as bundle of energy called:

    Correct

    Incorrect

    Explanation:

    X-ray exit the anode as burst of energy known as photons

  49. Question 49 of 100
    49. Question
    1 points

    The height of sine wave is called:

    Correct

    Incorrect

    Explanation:

    We usually focuse frequency and wavelength due to their relevance in imaging

  50. Question 50 of 100
    50. Question
    1 points

    The number of x-ray waves passing a given point per unit time is called:

    Correct

    Incorrect

    Explanation:

    Frequency is inverse to wavelength

  51. Question 51 of 100
    51. Question
    1 points

    The transformer that operates on principle of  self induction is called:

    Correct

    Incorrect

    Explanation:

    Other transformers operates on principle of  mutual induction

  52. Question 52 of 100
    52. Question
    1 points

    Electronic timers used in x-ray equipment allow for exposure times of:

    Correct

    Incorrect

    Explanation:

    One millisecond is the shortest time possible

  53. Question 53 of 100
    53. Question
    1 points

    To ensure consistency of radiographic quality from one exposure to the next, which device may be used?

     

    Correct

    Incorrect

    Explanation:

    Automatic exposure control is the only choice  that has to do with consistency of radiographic quality.

  54. Question 54 of 100
    54. Question
    1 points

    What happens when a predetermined level of ionization is reached in the ionization chamber?

    Correct

    Incorrect

    Explanation:

    Choice A does not make sense because if a precedence level of ionization is reached, the unit could not be malfunctioning because it reached that predetermined level.

  55. Question 55 of 100
    55. Question
    1 points

    An x-ray machine that makes maximum use of heat loading potential uses:

    Correct

    Incorrect

    Explanation:

    A Falling load generator allows very short exposure times  by taking advantage of adjusting to the shortest exposure time and highest mA allowed by high- voltage generator ,but it is not capable of long exposure times.

  56. Question 56 of 100
    56. Question
    1 points

    An  x-ray machine that makes maximum use of heat loading potential uses a(n):

    Correct

    Incorrect

    Explanation:

    A Falling load generator allows very short exposure times  by taking advantage of  tube hear loading potential.When the tube ‘s maximum heat load has been reached  for a set mA,the generator drops the mA to the next lower level that the tube can handle.

  57. Question 57 of 100
    57. Question
    1 points

    Devices in the x-ray circuit that operates on the principle of mutual induction are called:

    Correct

    Incorrect

    Explanation:

    Transformers operates on the principle of mutual induction.They are either step-up or step-down  transformers

  58. Question 58 of 100
    58. Question
    1 points

    The high – voltage section of the x-ray circuit makes use of what type of transformer?

    Correct

    Incorrect

    Explanation:

    The step-up  transformer, also called as high voltage transformer,increases or steps up the voltage to kilovoltage levels.

  59. Question 59 of 100
    59. Question
    1 points

    The device in the x-ray circuit that changes AC to DC is the:

    Correct

    Incorrect

    Explanation:

    DC is needed for the x-ray tube and  a rectifier changes AC to DC.

  60. Question 60 of 100
    60. Question
    1 points

    What type of current is required for the proper operation of the x-ray tube?

    Correct

    Incorrect

    Explanation:

    The x-ray tube requires a DC to operate properly.The rectifier changes AC to DC. Choice B and D do not describe a type of current that can be eliminated immediately.

  61. Question 61 of 100
    61. Question
    1 points

    Modern rectifiers are made of:

    Correct

    Incorrect

    Explanation:

    If 2 two very similar choices are presented,one of them is usually the correct answer.silicon is the non metallic chemical element often used in the manufacture of rectifiers.Silicon based semiconductors are solid state diodes.

  62. Question 62 of 100
    62. Question
    1 points

    The result of thermionic emission is

    Correct

    Incorrect

    Explanation:

    Thermionic emission occurs when one filament is heated to a level that causes the electrons to be “boiled off” or emitted creating a cloud of electrons at the cathode.Therm refers to heat, ion refers to a chrged particle,and emit means “to giveoff”.

  63. Question 63 of 100
    63. Question
    1 points

    The focusing cup is located at the:

    Correct

    Incorrect

    Explanation:

    The focusing cup is part of cathode assembly it keep the electron stream narrow.

  64. Question 64 of 100
    64. Question
    1 points

    An interaction that produces x-rays at the anode as aresult of outer shell electrons filling holes in the K-shell is called:

    Correct

    Incorrect

    Explanation:

    This is a description of characteristic radiation.Although both characteristics and brems radiation produces x-ray at the anode, brems radiation occurs when a projectile electron misses the outer shell target electrons and moves close to the nucleus.brems radiation brems radiation brems radiation.Photoelectric effect does involves outershell electrons filling holes in the  K- shell it does not produce x-rays at the anode. Both photoelectric effect and compton interaction which produces scatter radiation ,occur in the body.

  65. Question 65 of 100
    65. Question
    1 points

    When a quality control test is performed to ensure to ensure that adjacent mA stations are accurate,the result must be within the amount of one another:

    Correct

    Incorrect

    Explanation:

    Adjacent mA stations would be within 10 % of one another.

  66. Question 66 of 100
    66. Question
    1 points

    When a quality control test is performed to ensure that the same exposure factors produce x-ray output, succesive exposures  must be within this amount of one another:

    Correct

    Incorrect

    Explanation:

    When exposure reproducibility is tested, variation is measured radiation intensity should not be more than 5%.

  67. Question 67 of 100
    67. Question
    1 points

    When a quality control test is performed to ensure that the collimator is providing appropriate radiation protection, the result must be within this amount?

    Correct

    Incorrect

    Explanation:

    The collimator must be accurate to within 2 % of SID

  68. Question 68 of 100
    68. Question
    1 points

    In digital fluroscopy ,the image should be viewed on what device to make advantage of the digital capabilities?

    Correct

    Incorrect

  69. Question 69 of 100
    69. Question
    1 points

    A primary advantage of digital fluroscopy is:

    Correct

    Incorrect

    Explanation:

    Post processing provides for  manipulation of the image

  70. Question 70 of 100
    70. Question
    1 points

    The active portion of  a CR imaging plate is:

    Correct

    Incorrect

  71. Question 71 of 100
    71. Question
    1 points

    Energy in a CR imaging plate is released after exposure to:

    Correct

    Incorrect

    Explanation:

    This occurs in reader unit

  72. Question 72 of 100
    72. Question
    1 points

    In digital fluroscopy and computed radiography ,the energy must be changed to digital form by a(n):

    Correct

    Incorrect

  73. Question 73 of 100
    73. Question
    1 points

    An algorithm is:

    Correct

    Incorrect

  74. Question 74 of 100
    74. Question
    1 points

    In computed radiography,each pixel corresponds to a shade of gray representing in area in the patient known as a(n):

    Correct

    Incorrect

  75. Question 75 of 100
    75. Question
    1 points

    A digital image is composed of rows and columns known as:

    Correct

    Incorrect

  76. Question 76 of 100
    76. Question
    1 points

    Image brightness in computed radiography may be adjusted by:

    Correct

    Incorrect

    Explanation:

    Window width adjust Contrast

  77. Question 77 of 100
    77. Question
    1 points

    The window level in computed radiography is the:

    Correct

    Incorrect

  78. Question 78 of 100
    78. Question
    1 points

    Radiographic contrast in computed radiography may be adjusted by changing the:

    Correct

    Incorrect

    Explanation:

    Window level  adjust brightness

  79. Question 79 of 100
    79. Question
    1 points

    The amount of darkness on a radiograph is controlled primarily by 

    Correct

    Incorrect

  80. Question 80 of 100
    80. Question
    1 points

    The visible image may alse be called the:

    Correct

    Incorrect

  81. Question 81 of 100
    81. Question
    1 points

    The quantity of x-rays produced is directly controlled by:

    Correct

    Incorrect

    Explanation:
  82. Question 82 of 100
    82. Question
    1 points

    The rule or law that governs changing technique using kVp is the:

    Correct

    Incorrect

    Explanation:

    This is governed by 15% rule

  83. Question 83 of 100
    83. Question
    1 points

    Given an original technique of 10 mAs and  70 kVp,which of the following would produce a radiograph with double the density?

    Correct

    Incorrect

    Explanation:

    mAs has been doubled.

  84. Question 84 of 100
    84. Question
    1 points

    If SID is halved,what may be said about radiographic density?

    Correct

    Incorrect

    Explanation:

    This is governed by the Inverse square law.

  85. Question 85 of 100
    85. Question
    1 points

    The letter TFT stands for

    Correct

    Incorrect

  86. Question 86 of 100
    86. Question
    1 points

    Distortion that effects the size of the object as represented on the radiographic image is called:

    Correct

    Incorrect

    Explanation:

    There is no Minification

  87. Question 87 of 100
    87. Question
    1 points

    Shape distortion may take the form of:

    Correct

    Incorrect

    Explanation:

    These are 2 types of shape distortion.

  88. Question 88 of 100
    88. Question
    1 points

    A longer than usual OID may cause

    Correct

    Incorrect

    Explanation:

    An increase in OID will cause Magnification 

  89. Question 89 of 100
    89. Question
    1 points

    CR cassettes should be erased:

    Correct

    Incorrect

    Explanation:

    This is a recommendation.They must be erased at least every 48 hours

  90. Question 90 of 100
    90. Question
    1 points

    The equation of H/D describes:

    Correct

    Incorrect

    Explanation:

    Height of the lead strips divided by the distance between them

  91. Question 91 of 100
    91. Question
    1 points

    If the exposure field is not accurately recognized,the histogram:

    Correct

    Incorrect

  92. Question 92 of 100
    92. Question
    1 points

    Noise increases with an increase in:

    Correct

    Incorrect

    Explanation:

    Fewer x-rays are required to produce an image .This cause an increase in noise or quantum mottle.

  93. Question 93 of 100
    93. Question
    1 points

    Edge enhancement provides:

    Correct

    Incorrect

  94. Question 94 of 100
    94. Question
    1 points

    Which of the following grid errors would result in an image that shows normal density in the middle but decreased density on the sides and may follow removal and replacement of the grid?

    Correct

    Incorrect

    Explanation:

    If the grid is placed in this position ,rays can only get through the middle of the grid.

  95. Question 95 of 100
    95. Question
    1 points

    Grid frequency is described as the:

    Correct

    Incorrect

  96. Question 96 of 100
    96. Question
    1 points

    When working with CR and DR , one must be aware that their response to scatter radiation is:

    Correct

    Incorrect

  97. Question 97 of 100
    97. Question
    1 points

    The images on radiologist’s monitors appear:

    Correct

    Incorrect

    Explanation:

    Generally, diagnostic stations have higher resolution monitors

  98. Question 98 of 100
    98. Question
    1 points

    A histogram analysis error may be caused by:

    Correct

    Incorrect

  99. Question 99 of 100
    99. Question
    1 points

    Smoothing provides:

    Correct

    Incorrect

    Explanation:

    The overall noise is evened out by this process.

  100. Question 100 of 100
    100. Question
    1 points

    Consistency of image appearence is achieved through the use of:

    Correct

    Incorrect

    Explanation:

    It is important that proper algorithms be used for each projection

This website uses cookies.