EDELMEN’S SPI FINAL EXAM REVIEW 2025 QUESTIONS AND ANSWERS|100% PASS
1. Sound waves are: D
a) electric
b) mechanical, transverse
c) spectral
d) longitudinal, mechanical
2. The speed of sound of ultrasound in soft tissue is C
closest to:
a) 1,540 km/sec
b) 1.54 km/sec
c) 1,500 m/s
d) 1,540 mm/sec
3. Which is not an acoustic variable? D
a) density
b) pressure
c) distance
d) intensity
4. The effects of soft tissue on ultrasound are called: C
a) acoustic proliferation properties
b) dynamic effects
c) acoustic propagation properties
d) biological effects
5. All of the following are true EXCEPT: A
a) two waves with identical frequencies must interfere
constructively.
b) constructive interference is associated with waves
that are in-phase.
c) out-of-phase waves interfere destructively.
d) waves of different frequencies may exhibit both
, EDELMEN’S SPI FINAL EXAM REVIEW 2025 QUESTIONS AND ANSWERS|100% PASS
constructive and destructive interference at different
times.
6. Put in decreasing order: abdc
a) deca
b) deci
c) micro
d) centi
7. is the time to complete one cycle C
a) pulse duration
b) pulse period
c) period
d) duration period
8. Which of the following sound waves is ultrasonic and A
least useful in diagnostic imaging?
a) 30 KHz
b) 8 Mhz
c) 8,000 Hz
d) 3,000 Hz
e) 15 Hz
9. is the distance covered by one cycle. B
a) pulse length
b) wavelength
c) cycle distance
d) cycle duration
10. Which of the following is determined by the source D
and the medium?
a) frequency
b) period
, EDELMEN’S SPI FINAL EXAM REVIEW 2025 QUESTIONS AND ANSWERS|100% PASS
c) propagation speed
d) range resolution
11. Propagation speed = x wavelength D
a) pulse duration
b) period
c) # of cycles in the pulse
d) frequency
12. As a result of the propagation speed increases. C
a) increasing stiffness and increasing density
b) increasing stiffness and increasing elasticity
c) decreasing compressibility and decreasing density
d) decreasing stiffness and decreasing density.
13. Put in decreasing order of propagation speed. cba
a) gas
b) liquid
c) solid
14. If the frequency of an ultrasound wave is doubled, B
what happens to the period?
a) doubles
b) halved
c) remains the same
d) 4x greater
15. The units of pulse repetition frequency are: A
a) per minute
b) microseconds
c) mm/microseconds
d) MHz
, EDELMEN’S SPI FINAL EXAM REVIEW 2025 QUESTIONS AND ANSWERS|100% PASS
16. The time from the beginning of the pulse to the end B
of that pulse is ?
a) period
b) pulse duration
c) pulse length
d) PRF
17. What happens to the speed of sound in a medium A
when the bulk modulus increases?
a) faster
b) slower
c) unchanged
18. resolution is determined by the spatial pulse A or C
length
a) radial
b) image
c) axial
d) angular
19. If the wave's amplitude is doubles, what happens to D
the power?
a) nothing
b) halved
c) doubled
d) quadrupled
20. If the level of acoustic variable ranges from 55-105, 25
what is the amplitude?
a) 105
b) 50
c) 25
d) 55
1. Sound waves are: D
a) electric
b) mechanical, transverse
c) spectral
d) longitudinal, mechanical
2. The speed of sound of ultrasound in soft tissue is C
closest to:
a) 1,540 km/sec
b) 1.54 km/sec
c) 1,500 m/s
d) 1,540 mm/sec
3. Which is not an acoustic variable? D
a) density
b) pressure
c) distance
d) intensity
4. The effects of soft tissue on ultrasound are called: C
a) acoustic proliferation properties
b) dynamic effects
c) acoustic propagation properties
d) biological effects
5. All of the following are true EXCEPT: A
a) two waves with identical frequencies must interfere
constructively.
b) constructive interference is associated with waves
that are in-phase.
c) out-of-phase waves interfere destructively.
d) waves of different frequencies may exhibit both
, EDELMEN’S SPI FINAL EXAM REVIEW 2025 QUESTIONS AND ANSWERS|100% PASS
constructive and destructive interference at different
times.
6. Put in decreasing order: abdc
a) deca
b) deci
c) micro
d) centi
7. is the time to complete one cycle C
a) pulse duration
b) pulse period
c) period
d) duration period
8. Which of the following sound waves is ultrasonic and A
least useful in diagnostic imaging?
a) 30 KHz
b) 8 Mhz
c) 8,000 Hz
d) 3,000 Hz
e) 15 Hz
9. is the distance covered by one cycle. B
a) pulse length
b) wavelength
c) cycle distance
d) cycle duration
10. Which of the following is determined by the source D
and the medium?
a) frequency
b) period
, EDELMEN’S SPI FINAL EXAM REVIEW 2025 QUESTIONS AND ANSWERS|100% PASS
c) propagation speed
d) range resolution
11. Propagation speed = x wavelength D
a) pulse duration
b) period
c) # of cycles in the pulse
d) frequency
12. As a result of the propagation speed increases. C
a) increasing stiffness and increasing density
b) increasing stiffness and increasing elasticity
c) decreasing compressibility and decreasing density
d) decreasing stiffness and decreasing density.
13. Put in decreasing order of propagation speed. cba
a) gas
b) liquid
c) solid
14. If the frequency of an ultrasound wave is doubled, B
what happens to the period?
a) doubles
b) halved
c) remains the same
d) 4x greater
15. The units of pulse repetition frequency are: A
a) per minute
b) microseconds
c) mm/microseconds
d) MHz
, EDELMEN’S SPI FINAL EXAM REVIEW 2025 QUESTIONS AND ANSWERS|100% PASS
16. The time from the beginning of the pulse to the end B
of that pulse is ?
a) period
b) pulse duration
c) pulse length
d) PRF
17. What happens to the speed of sound in a medium A
when the bulk modulus increases?
a) faster
b) slower
c) unchanged
18. resolution is determined by the spatial pulse A or C
length
a) radial
b) image
c) axial
d) angular
19. If the wave's amplitude is doubles, what happens to D
the power?
a) nothing
b) halved
c) doubled
d) quadrupled
20. If the level of acoustic variable ranges from 55-105, 25
what is the amplitude?
a) 105
b) 50
c) 25
d) 55
