Physics Final Review

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1. Heat sterilization is not recommended for diagnostic transducers because:

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Physics Final Review

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2. Half-value is equal to an intensity reduction of:

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3. Bending of a transmitting sound beam once it passes through one medium to another describes:

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4. The purpose of backing material in the transducer assembly is to:

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5. Limiting the exposure time to a fetus is an example of:

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6. Cleaning of transducer should be performed:

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7. Washing hands before and after an examination are examples of:

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8. Subdicing the elements in diagnostic ultrasound transducers is used to:

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9. Use ultrasound for entertainment is:

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10. The Nyquist limit is equal to:

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11. A disadvantage to power Doppler imaging is:

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12. Which of the following best describes apodization?

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13. Which testing device measures acoustic output?

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14. Color Doppler frequency shifts are obtained using:

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15. Propagation speed through a medium is determined by the:

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16. Which of the following is a disadvantage of a single-emulsion x-ray film?

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17. Which of the following are types of cavitation?

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18. The mission of the ALARA principle is to:

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19. The study of various factor determining the frequency and distribution of diseases in human community describes:

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20. What is the term used to describe a picture element?

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21. Standard precautions apply to all of the following EXCEPT:

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22.  Normal respiratory variations in venous blood flow is termed:

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23. The design of ultrasound systems assumes:

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24.  Absorption of the sound beam is highest in:

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25. Power is defined as:

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26. Which of the following is an auscultatory consequence of turbulent flow?

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27. The most common piezoelectric material use in diagnostic ultrasound transducers' is:

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28. If the width of the transducer is 5.0 cm, what is the width at the focal point?

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29. Which of the following reduces occupational injuries?

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30. Which of the following units measures the pressure in a wave?

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31. The minimum number of samples required to avoid aliasing is termed:

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32. If the amplitude of a wave doubles, the intensity will:

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33. If the received and transmitted frequencies are identical, which of the following will occur?

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34. In which of the following media does sound propagate the fastest?

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35. Which of the following transducer displays a trapezoidal image?

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36. Regions of low density in a compression wave are termed:

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37. If the line density is increased which of the following is most likely to occur?

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38. The ability to distinguish two structures in a path perpendicular to the sound beam describes:

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39. Which of the following units measures the attenuation of sound in soft tissue

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40. Which of the following color modes calculates the mean velocities with the colors placed side to side?

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41. The American Institute of Ultrasound in Medicine (AIUM) 100 test object cannot evaluate:

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42. The number of images per second defines the:

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43. Which of the following best describes a digital matrix?

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44. The American Institute of Ultrasound in Medicine recommends:

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45. How many shades of gray are in a 6 bit memory?

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46. Preventive maintenance service is generally completed:

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47. The width of the sound beam determines the:

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48. If the frequency is increased, pulse duration will:

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49. Which of the following formulas determines the impedance of a medium?

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50. Snell's law determines the amount of:

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51. The range of frequencies found within a pulse describes which of the following terms?

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52. The binary number 0110010 corresponds to a decimal number of:

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53. A change in direction of the ultrasound beam is more commonly a result of:

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54. The distance from the face of a focused transducer to the point of spatial peak intensity is termed the:

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55. Steering of the sound beam is accomplished by:

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56. Which of the following is an advantage of subdicing?

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57. Pulse wave Doppler uses a maximum of:

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58. A major advantage of continuous wave Dopper is the:

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59. The knee of a time gain compensation curve represents the:

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60. The resonant frequency of a pulse wave is determined by the:

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61. Under sampling of the Doppler shift will most likely produce:

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62.  The motion of moving structures in a 2D image display describes:

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63. Which of the following is a post processing feature?

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64. All of the following statement correctly describe m-mode EXCEPT:

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65. Which of the following is an acoustic variable?

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66. Which of the following intensities is greatest across the sound beam?

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67. Reducing the impedance difference between the crystal and the skin is the primary function of which of the following transducer components?

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68.  If the stiffness of a medium increases, the propagation speed will:

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69. Which of the following components instructs the ultrasound system to send a signal to the transducer?

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70. Which of the following imaging modalities demonstrates the highest intensity?

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71. Lateral resolution is determined by the:

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72. The number of correct test results divided by the total number of test defines:

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73. Which of the following testing devices can stimulate pulsatile or retrograde flow?

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74. Vector array is a type of transducer:

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75. A positive Doppler shift occurs when the:

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76. The use of contrast agents in diagnostic sonography:

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77. Which of the following is the simplest form of Doppler?

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78. Enhancement of echo reflections occur distal to a:

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79. Epidemiology studies on the biological effects of diagnostic ultrasound have determined:

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80. An active element with a thickness of 0.8 mm and a propagation speed of 4mm/us will have an operating frequency of:

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81. Temporal resolution is determined by the:

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82. With a focused transducer, there are no confirmed significant biological effects in mammalian tissue for exposures below:

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83. How long will it take sound to travel 5 cm round trip in soft tissue?

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84. Which component of the ultrasound system adjusts the pulse repetition frequency with changes in imaging depth?

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85. Which of the following is a characteristic of read zoom?

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86. Which of the following occurs when a sound wave strikes a large, smooth surface at 90 degree angle?

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87. What type of arterial blood flow exhibits a constant velocity across the vessel?

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88. Thermal index has a low risk of adverse effects if the value is:

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89. Increasing the packet size of color Doppler will decrease the:

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90. The ability to place reflection in proper positions no matter the imaging orientation describes:

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91. The sonographer can determine the depth of the focal zone when using a transducer with a(n):

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92. Which of the following artifacts extends color Doppler beyond the region of actual blood flow?

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93. Scan lines area aimed in a variety of pathways when utilizing:

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94. What is the axial resolution in soft tissue when using a 5 MHz frequency with a 2 cycle pulse, and an element thickness of 0.5 mm?

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95. At what depth will a 3MHz frequency demonstrate an attenuation of 9 dB?

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96. Altering the received signal for display is a function of the:

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97. What are the units for power?

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98. The near zone length of a 3 mm, 10 MHz transducer is:

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99. Which of the following statements accurately describe demodulation?

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100. Which of the following is responsible for determining the amount of reflection and transmission of the sound wave?

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101. Attenuation occurring as sound propagates through each centimeter of soft tissue is equal to:

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102. Heat is most dependent on which of the following intensities?

Submit

103. All of the following can be controlled by delays in the transmitted pulse EXCEPT:

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104. Direction of the incident beam with respect to the media boundary is termed the:

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105. Which of the following frequencies is within the audible range?

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106. Which intensity is the greatest during the pulse?

Submit

107. Resistance to the propagation of sound through a medium defines:

Submit

108. Which of the following decreases the likelihood of range ambiguity artifact?

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109. Which of the following will most likely decrease the propagation speed of a wave?

Submit

110. Thickening of the spectral trace is most likely a result of:

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111. Axial resolution directly relates to the:

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112. The vertical axis of a spectral analysis represents:

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113. Increasing the amplitude of the sound beam by 3dB will

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114. The Doppler shift is inversely related to the:

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115. Section thickness is related to the:

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116. The hydrophone measures:

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117. When Doppler gain setting is too high, which of the following artifacts is most likely to occur?

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118. Low flow velocities are more likely detected by:

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119.  Utilizing a high pulse repetition frequency result in a:

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120. Which of the following is directly related to the pulse repetition frequency?

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Heat sterilization is not recommended for diagnostic transducers...
Half-value is equal to an intensity reduction of:
Bending of a transmitting sound beam once it passes through one medium...
The purpose of backing material in the transducer assembly is to:
Limiting the exposure time to a fetus is an example of:
Cleaning of transducer should be performed:
Washing hands before and after an examination are examples of:
Subdicing the elements in diagnostic ultrasound transducers is used...
Use ultrasound for entertainment is:
The Nyquist limit is equal to:
A disadvantage to power Doppler imaging is:
Which of the following best describes apodization?
Which testing device measures acoustic output?
Color Doppler frequency shifts are obtained using:
Propagation speed through a medium is determined by the:
Which of the following is a disadvantage of a single-emulsion x-ray...
Which of the following are types of cavitation?
The mission of the ALARA principle is to:
The study of various factor determining the frequency and distribution...
What is the term used to describe a picture element?
Standard precautions apply to all of the following EXCEPT:
 Normal respiratory variations in venous blood flow is termed:
The design of ultrasound systems assumes:
 Absorption of the sound beam is highest in:
Power is defined as:
Which of the following is an auscultatory consequence of turbulent...
The most common piezoelectric material use in diagnostic ultrasound...
If the width of the transducer is 5.0 cm, what is the width at the...
Which of the following reduces occupational injuries?
Which of the following units measures the pressure in a wave?
The minimum number of samples required to avoid aliasing is termed:
If the amplitude of a wave doubles, the intensity will:
If the received and transmitted frequencies are identical, which of...
In which of the following media does sound propagate the fastest?
Which of the following transducer displays a trapezoidal image?
Regions of low density in a compression wave are termed:
If the line density is increased which of the following is most likely...
The ability to distinguish two structures in a path perpendicular to...
Which of the following units measures the attenuation of sound in soft...
Which of the following color modes calculates the mean velocities with...
The American Institute of Ultrasound in Medicine (AIUM) 100 test...
The number of images per second defines the:
Which of the following best describes a digital matrix?
The American Institute of Ultrasound in Medicine recommends:
How many shades of gray are in a 6 bit memory?
Preventive maintenance service is generally completed:
The width of the sound beam determines the:
If the frequency is increased, pulse duration will:
Which of the following formulas determines the impedance of a medium?
Snell's law determines the amount of:
The range of frequencies found within a pulse describes which of the...
The binary number 0110010 corresponds to a decimal number of:
A change in direction of the ultrasound beam is more commonly a result...
The distance from the face of a focused transducer to the point of...
Steering of the sound beam is accomplished by:
Which of the following is an advantage of subdicing?
Pulse wave Doppler uses a maximum of:
A major advantage of continuous wave Dopper is the:
The knee of a time gain compensation curve represents the:
The resonant frequency of a pulse wave is determined by the:
Under sampling of the Doppler shift will most likely produce:
 The motion of moving structures in a 2D image display describes:
Which of the following is a post processing feature?
All of the following statement correctly describe m-mode EXCEPT:
Which of the following is an acoustic variable?
Which of the following intensities is greatest across the sound beam?
Reducing the impedance difference between the crystal and the skin is...
 If the stiffness of a medium increases, the propagation speed...
Which of the following components instructs the ultrasound system to...
Which of the following imaging modalities demonstrates the highest...
Lateral resolution is determined by the:
The number of correct test results divided by the total number of test...
Which of the following testing devices can stimulate pulsatile or...
Vector array is a type of transducer:
A positive Doppler shift occurs when the:
The use of contrast agents in diagnostic sonography:
Which of the following is the simplest form of Doppler?
Enhancement of echo reflections occur distal to a:
Epidemiology studies on the biological effects of diagnostic...
An active element with a thickness of 0.8 mm and a propagation speed...
Temporal resolution is determined by the:
With a focused transducer, there are no confirmed significant...
How long will it take sound to travel 5 cm round trip in soft tissue?
Which component of the ultrasound system adjusts the pulse repetition...
Which of the following is a characteristic of read zoom?
Which of the following occurs when a sound wave strikes a large,...
What type of arterial blood flow exhibits a constant velocity across...
Thermal index has a low risk of adverse effects if the value is:
Increasing the packet size of color Doppler will decrease the:
The ability to place reflection in proper positions no matter the...
The sonographer can determine the depth of the focal zone when using a...
Which of the following artifacts extends color Doppler beyond the...
Scan lines area aimed in a variety of pathways when utilizing:
What is the axial resolution in soft tissue when using a 5 MHz...
At what depth will a 3MHz frequency demonstrate an attenuation of 9...
Altering the received signal for display is a function of the:
What are the units for power?
The near zone length of a 3 mm, 10 MHz transducer is:
Which of the following statements accurately describe demodulation?
Which of the following is responsible for determining the amount of...
Attenuation occurring as sound propagates through each centimeter of...
Heat is most dependent on which of the following intensities?
All of the following can be controlled by delays in the transmitted...
Direction of the incident beam with respect to the media boundary is...
Which of the following frequencies is within the audible range?
Which intensity is the greatest during the pulse?
Resistance to the propagation of sound through a medium defines:
Which of the following decreases the likelihood of range ambiguity...
Which of the following will most likely decrease the propagation speed...
Thickening of the spectral trace is most likely a result of:
Axial resolution directly relates to the:
The vertical axis of a spectral analysis represents:
Increasing the amplitude of the sound beam by 3dB will
The Doppler shift is inversely related to the:
Section thickness is related to the:
The hydrophone measures:
When Doppler gain setting is too high, which of the following...
Low flow velocities are more likely detected by:
 Utilizing a high pulse repetition frequency result in a:
Which of the following is directly related to the pulse repetition...
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