SPI Mock Exam 1 Questions And Answers
Which of the following best describes the features of a sound wave
and medium that determine the speed of sound in the medium?
-density of the medium and stiffness of the medium
-elasticity of the medium and frequency of the sound beam
-stiffness of the medium and elasticity of the medium
-pulse repetition period of the sound wave and density of the
medium
-density of the medium and power of the sound beam -
correct answer ✅-density of the medium and stiffness of the
medium
Which of the following best describes the mechanistic approach to
the study of bioeffects?
effect-microstreaming
cause-effect
causation-reaction
risk-benefit
exposure-response -
correct answer ✅cause-effect
Which of the following receiver functions cannot be adjusted by the
sonographer?
,SPI Mock Exam 1 Questions And Answers
threshold
amplification
compensation
demodulation
compression -
correct answer ✅demodulation
The image on an ultrasound system's display is too bright. Which of
the following techniques is best to correct this problem?
increase threshold
decrease receiver gain
decrease output power
decrease reject
adjust time gain compensation -
correct answer ✅decrease output power
Which of the following is most likely to create cavitation?
low peak pressure and long wavelength
high peak rarefaction pressure and low frequency
high peak pressure and short wavelength
,SPI Mock Exam 1 Questions And Answers
high peak pressure and high frequency -
correct answer ✅high peak rarefaction pressure and low
frequency
Which of the following functions of a receiver is used to create
similar brightness reflections from identical reflectors positioned at
different depths in the body?
compression
receiver gain
amplification
demodulation
compensation -
correct answer ✅compensation
You are performing a quality assurance study on an ultrasound
system using a tissue equivalent phantom. You make an adjustment
using a knob on the system console that changes the appearance of
reflector brightness from fully bright to barely visible. What are you
evaluating?
resolution
dynamic range
system sensitivity
, SPI Mock Exam 1 Questions And Answers
vertical calibration
slice thickness -
correct answer ✅system sensitivity
All of the following are primarily used to change the overall
brightness of an entire image EXCEPT:
overall gain
compensation
amplification
receiver gain
output power -
correct answer ✅compensation
The electronics within the ultrasound receiver reduces the
amplitude dynamic range by 20 dB. What is the compressed
dynamic range it the uncompressed dynamic range was 100 dB
5 dB
80 volts
120 dB
80 dB
-3 dB -
correct answer ✅80 dB
Which of the following best describes the features of a sound wave
and medium that determine the speed of sound in the medium?
-density of the medium and stiffness of the medium
-elasticity of the medium and frequency of the sound beam
-stiffness of the medium and elasticity of the medium
-pulse repetition period of the sound wave and density of the
medium
-density of the medium and power of the sound beam -
correct answer ✅-density of the medium and stiffness of the
medium
Which of the following best describes the mechanistic approach to
the study of bioeffects?
effect-microstreaming
cause-effect
causation-reaction
risk-benefit
exposure-response -
correct answer ✅cause-effect
Which of the following receiver functions cannot be adjusted by the
sonographer?
,SPI Mock Exam 1 Questions And Answers
threshold
amplification
compensation
demodulation
compression -
correct answer ✅demodulation
The image on an ultrasound system's display is too bright. Which of
the following techniques is best to correct this problem?
increase threshold
decrease receiver gain
decrease output power
decrease reject
adjust time gain compensation -
correct answer ✅decrease output power
Which of the following is most likely to create cavitation?
low peak pressure and long wavelength
high peak rarefaction pressure and low frequency
high peak pressure and short wavelength
,SPI Mock Exam 1 Questions And Answers
high peak pressure and high frequency -
correct answer ✅high peak rarefaction pressure and low
frequency
Which of the following functions of a receiver is used to create
similar brightness reflections from identical reflectors positioned at
different depths in the body?
compression
receiver gain
amplification
demodulation
compensation -
correct answer ✅compensation
You are performing a quality assurance study on an ultrasound
system using a tissue equivalent phantom. You make an adjustment
using a knob on the system console that changes the appearance of
reflector brightness from fully bright to barely visible. What are you
evaluating?
resolution
dynamic range
system sensitivity
, SPI Mock Exam 1 Questions And Answers
vertical calibration
slice thickness -
correct answer ✅system sensitivity
All of the following are primarily used to change the overall
brightness of an entire image EXCEPT:
overall gain
compensation
amplification
receiver gain
output power -
correct answer ✅compensation
The electronics within the ultrasound receiver reduces the
amplitude dynamic range by 20 dB. What is the compressed
dynamic range it the uncompressed dynamic range was 100 dB
5 dB
80 volts
120 dB
80 dB
-3 dB -
correct answer ✅80 dB
