Comprehensive SPI Practice Test

180 Questions | Total Attempts: 1944

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Practice Test Quizzes & Trivia

Sonographic Principles & Instrumentation


Questions and Answers
  • 1. 
    Sound waves are
    • A. 

      Electric

    • B. 

      Mechanical transverse

    • C. 

      Spectral

    • D. 

      Longitudinal mechanical

  • 2. 
    The speed of US in soft tissue is closest to
    • A. 

      1.540 km/sec

    • B. 

      1.54 km/msec

    • C. 

      1.500 m/s

    • D. 

      1.540 mm/sec

  • 3. 
    The frequency closest to the lower limit of US is
    • A. 

      19.000 kHz

    • B. 

      10.000 MHz

    • C. 

      20.000 msec

    • D. 

      15.000 Hz

  • 4. 
    Which is not an acoustic variable?
    • A. 

      Density

    • B. 

      Pressure

    • C. 

      Distance

    • D. 

      Intensity

  • 5. 
    The effects of soft tissue on US are called:
    • A. 

      Acoustic proliferation properties

    • B. 

      Dynamic effects

    • C. 

      Acoustic propagation properties

    • D. 

      Biologic effects

  • 6. 
    All of the following are true EXCEPT:
    • A. 

      Two waves with identical frequencies must interfere constructively

    • B. 

      Constructive inferference is associated with waves that are in-phase

    • C. 

      Out-of-phase waves inferfere destructively

    • D. 

      Waves of different frequencies may exhibit both constructive and destructive interference at different times

  • 7. 
    Put in decreasing order
    • A. 

      Deca

    • B. 

      Deci

    • C. 

      Micro

    • D. 

      Centi

  • 8. 
    ______ is the time to complete on cycle
    • A. 

      Pulse duration

    • B. 

      Pulse period

    • C. 

      Period

    • D. 

      Duration period

  • 9. 
    Which of the following sound waves is ultrasonic and least useful in diagnostic imaging?
    • A. 

      30 KHz

    • B. 

      8 MHz

    • C. 

      8.00 Hz

    • D. 

      3.00 kHz

    • E. 

      15 Hz

  • 10. 
    What is the frequency of a wave with 1 msec period?
    • A. 

      10.00 Hz

    • B. 

      1.00 kHz

    • C. 

      1 kHz

    • D. 

      1 MHz

  • 11. 
    _____ is the distance covered by one cycle.
    • A. 

      Pulse length

    • B. 

      Wavelength

    • C. 

      Cycle distance

    • D. 

      Cycle duration

  • 12. 
    Which of the following is determined by the source and the medium?
    • A. 

      Frequency

    • B. 

      Period

    • C. 

      Propagation speed

    • D. 

      Range resolution

  • 13. 
    Propagation speed = _______ x wavelength
    • A. 

      Pulse duration

    • B. 

      Period

    • C. 

      Number of cycles in the pulse

    • D. 

      Frequency

  • 14. 
    As a result  of _____ the propagation speed increases.
    • A. 

      Increasing stiffness and increasing density

    • B. 

      Increasing stiffness and increasing elasticity

    • C. 

      Decreasing compressibility and decreasing density

    • D. 

      Decreasing stiffness and decreasing density

  • 15. 
    Sound waves carry energy
    • A. 

      True

    • B. 

      False

  • 16. 
    Sound waves are longitudinal waves sound travels in a straight line
    • A. 

      True

    • B. 

      False

  • 17. 
    What are the acousitic variables?
    • A. 

      Pressure, density, distance

    • B. 

      Period, frequency, amplitude, power, intensity, wavelength, propagation speed

  • 18. 
    What are the acoustic parameters?
    • A. 

      Pressure density distance

    • B. 

      Period frequency amplitude power intensity wavelength propagation speed

  • 19. 
    A pair of waves are considered out of phase when their peaks occur at the same time and location
    • A. 

      True

    • B. 

      False

  • 20. 
    Infrasound is?
    • A. 

    • B. 

      Between 20 Hz & 20 kHz

    • C. 

      >20 kHz

  • 21. 
    Period and frequency are determined by?
    • A. 

      Sound source

    • B. 

      Sound source and medium

    • C. 

      Medium

  • 22. 
    Period and frequency are
    • A. 

      Inversely

    • B. 

      Directly

    • C. 

      Proportional

    • D. 

      Reciprocal

  • 23. 
    Amplitude has which units?
    • A. 

      Acoustic variables

    • B. 

      Watts

    • C. 

      Energy

  • 24. 
    Amplitude , power, intensity are determined by the
    • A. 

      Medium

    • B. 

      Sound source

    • C. 

      Both sound source and medium

  • 25. 
    Amplitude, power, intensity are not adjustable
    • A. 

      True

    • B. 

      False

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