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2024 SPI PRACTICE EXAM QUESTIONS WITH CORRECT ANSWERS 

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2024 SPI PRACTICE EXAM QUESTIONS WITH CORRECT ANSWERS 

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  • November 3, 2024
  • 23
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • sound waves are
  • SPI
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Elitaa
2024 SPI PRACTICE EXAM
QUESTIONS WITH CORRECT
ANSWERS


Sound waves are: - CORRECT-ANSWERSlongitudinal, mechanical

The speed of sound in soft tissue is closest to: - CORRECT-ANSWERS1,500
m/s

The frequency closest to the lower limit of ultrasound is: - CORRECT-
ANSWERS15,000 Hz

Which is not an acoustic variable? - CORRECT-ANSWERSintensity

What best describes the features of a sound wave and medium that
determine the speed of sound? - CORRECT-ANSWERSdensity and stiffness

Which of these biologic tissues will sound waves propagate most quickly? -
CORRECT-ANSWERStendon

How much bigger is a billion than a thousand? - CORRECT-
ANSWERS1,000,000

Which of the following transducers will create sound with the lowest
frequency? - CORRECT-ANSWERSthick crystal, PZT in which sound travels
slowly

Which of the following transducers will create a sound beam with the least
amount of divergence? - CORRECT-ANSWERShigh frequency, large diameter

All of the following describe dynamic range EXCEPT: logarithmic, comparison,
relative, absolute, ratio - CORRECT-ANSWERSabsolute

An ultrasound system's display is too bright. Which of the following
techniques is best to correct this problem? - CORRECT-ANSWERSdecrease
output power

In B-mode, which input is used with the amplitude of reflection? - CORRECT-
ANSWERSz-axis

,Which of the following is the cause of slice thickness artifact? - CORRECT-
ANSWERSbeam dimension greater in size than the reflector

Which of these statements is true of a 25 MHz sound pulse? - CORRECT-
ANSWERShighly attenuating, short SPL

All of the following regarding the hemodynamics of a stenosis are true
EXCEPT: - CORRECT-ANSWERSpressure is lowest downstream

What will increase signal-to-noise ratio? - CORRECT-ANSWERSincreasing
output power

Which component of an ultrasound system exposes the patient to the
greatest risk? - CORRECT-ANSWERStransducer

What is NOT related to CW wave transducers? - CORRECT-ANSWERSwide
bandwidth

Which of the following best describes demodulation of electronic signals? -
CORRECT-ANSWERSchanging the shape or form of the signal

What is related to frequency to the 4th power? - CORRECT-ANSWERSrayleigh
scattering

T/F: Shadowing artifact is unrelated to the speed of sound in a medium -
CORRECT-ANSWERStrue

In which of these media will sound travel the slowest? - CORRECT-
ANSWERShigh density, low stiffness

The general mechanism which creates harmonics is called: - CORRECT-
ANSWERSnon-linear behavior

What is NOT true regarding normal cavitation? - CORRECT-ANSWERSharmful
bioeffects are commonly observed

Which of the following choices determines the signal amplitude in the
transducer of an ultrasound? - CORRECT-ANSWERSreflected intensity

Which best describes annular array transducers? - CORRECT-
ANSWERSexcellent lateral resolution, diminished temporal resolution, sector
shaped

What determines the spatial resolution of a monitor? - CORRECT-
ANSWERSthe number of lines per frame

, Which type of transducer will have the shallowest focus? - CORRECT-
ANSWERSlow frequency, small diameter

An image is too dark. Which technique is best to correct this problem? -
CORRECT-ANSWERSincrease receiver gain

What is NOT associated with PACS? - CORRECT-ANSWERSanalog replay

Which is most likely to create cavitation? - CORRECT-ANSWERShigh peak
rarefaction pressure and low frequency

Which receiver function cannot be adjusted by the sonographer? - CORRECT-
ANSWERSdemodulation

What will NOT improve temporal resolution? - CORRECT-ANSWERSincreased
line density

Which of these terms means "many gray shades"? - CORRECT-ANSWERSwide
dynamic range

What is the accuracy of reflector depth called? - CORRECT-ANSWERSdepth
calibration

Which technique results in a 3D image? - CORRECT-ANSWERSsurface
rendering

Which control allows adjustment for attenuation at specific depths? -
CORRECT-ANSWERSTGC

What determines the center frequency of a transducer? - CORRECT-
ANSWERSthickness

How does frequency compounding improve image quality? - CORRECT-
ANSWERSreduces speckle

Which variable decreased when the number of acoustic lines per frame is
increased without changing the maximum depth? - CORRECT-
ANSWERSframe rate

Which setting of an ultrasound system gives the sonographer the ability to
display both strong and weak echoes? - CORRECT-ANSWERSdynamic range

Which factor reduces the likelihood of aliasing in pulsed wave spectral
doppler? - CORRECT-ANSWERSincreased nyquist limit

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