Edelmen's SPI Exam Review UPDATED ACTUAL QUESTIONS AND CORRECT
ANSWERS
Sound waves are: D
a) electric
b) mechanical, transverse
c) spectral
d) longitudinal, mechanical
The speed of sound of ultrasound in soft tissue is closest C
to:
a) 1,540 km/sec
b) 1.54 km/sec
c) 1,500 m/s
d) 1,540 mm/sec
Which is not an acoustic variable? D
a) density
b) pressure
c) distance
d) intensity
The effects of soft tissue on ultrasound are called: C
a) acoustic proliferation properties
b) dynamic effects
c) acoustic propagation properties
d) biological effects
, 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
constructive and destructive interference at different
times.
Put in decreasing order: abdc
a) deca
b) deci
c) micro
d) centi
____ is the time to complete one cycle C
a) pulse duration
b) pulse period
c) period
d) duration period
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
____ is the distance covered by one cycle. B
a) pulse length
b) wavelength
c) cycle distance
d) cycle duration
Which of the following is determined by the source and D
the medium?
a) frequency
b) period
c) propagation speed
d) range resolution
Propagation speed = _____x wavelength D
a) pulse duration
b) period
c) # of cycles in the pulse
d) frequency
ANSWERS
Sound waves are: D
a) electric
b) mechanical, transverse
c) spectral
d) longitudinal, mechanical
The speed of sound of ultrasound in soft tissue is closest C
to:
a) 1,540 km/sec
b) 1.54 km/sec
c) 1,500 m/s
d) 1,540 mm/sec
Which is not an acoustic variable? D
a) density
b) pressure
c) distance
d) intensity
The effects of soft tissue on ultrasound are called: C
a) acoustic proliferation properties
b) dynamic effects
c) acoustic propagation properties
d) biological effects
, 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
constructive and destructive interference at different
times.
Put in decreasing order: abdc
a) deca
b) deci
c) micro
d) centi
____ is the time to complete one cycle C
a) pulse duration
b) pulse period
c) period
d) duration period
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
____ is the distance covered by one cycle. B
a) pulse length
b) wavelength
c) cycle distance
d) cycle duration
Which of the following is determined by the source and D
the medium?
a) frequency
b) period
c) propagation speed
d) range resolution
Propagation speed = _____x wavelength D
a) pulse duration
b) period
c) # of cycles in the pulse
d) frequency
