Questions And Answers
Sound waves are:
a) electric
b) mechanical, transverse
c) spectral
d) longitudinal, mechanical -
correct answer ✅D
The speed of sound of ultrasound in soft tissue is closest to:
a) 1,540 km/sec
b) 1.54 km/sec
c) 1,500 m/s
d) 1,540 mm/sec -
correct answer ✅C
Which is not an acoustic variable?
a) density
b) pressure
c) distance
d) intensity -
correct answer ✅D
,Edelmen's SPI Exam Review Exam
Questions And Answers
The effects of soft tissue on ultrasound are called:
a) acoustic proliferation properties
b) dynamic effects
c) acoustic propagation properties
d) biological effects -
correct answer ✅C
All of the following are true EXCEPT:
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 constructive and
destructive interference at different times. -
correct answer ✅A
Put in decreasing order:
a) deca
,Edelmen's SPI Exam Review Exam
Questions And Answers
b) deci
c) micro
d) centi -
correct answer ✅abdc
______ is the time to complete one cycle
a) pulse duration
b) pulse period
c) period
d) duration period -
correct answer ✅C
Which of the following sound waves is ultrasonic and least useful in
diagnostic imaging?
a) 30 KHz
b) 8 Mhz
c) 8,000 Hz
d) 3,000 Hz
e) 15 Hz -
correct answer ✅A
, Edelmen's SPI Exam Review Exam
Questions And Answers
______ is the distance covered by one cycle.
a) pulse length
b) wavelength
c) cycle distance
d) cycle duration -
correct answer ✅B
Which of the following is determined by the source and the
medium?
a) frequency
b) period
c) propagation speed
d) range resolution -
correct answer ✅D
Propagation speed = _______ x wavelength
a) pulse duration
b) period
c) # of cycles in the pulse