SPI EDELMAN REVIEW UPDATED EXAM
QUESTIONS & ANSWERS WITH DETAILED
RATIONALES | INSTANT PDF DOWNLOAD
Sound waves are:
A: electric
B: mechanical, transverse
C: spectral
D: longitudinal, mechanical - correct answer -D: longitudinal, mechanical
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 - correct answer -C: 1,500 m/s
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 - correct answer -D: 15,000 Hz
Which is not an acoustic variable?
A: density
B: pressure
C: distance
D: intensity - correct answer -D: intensity
,The effects of soft tissue on US are called:
A: acoustic proliferation properties
B: dynamic effects
C: acoustic propagation properties
D: biologic effects - correct answer -C: acoustic propagation properties
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: two waves with identical frequency
must interfere constructively
Put in decreasing order:
A: deca
B: deci
C: micro
D: centi - correct answer -A: deca, B: deci, D: centi, and C: micro
_______________ is the time to complete one cycle.
A: pulse duration
B: pulse period
C: period
D: duration period - correct answer -C: period
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 kHz
E: 15 Hz - correct answer -A: 30 KHz
What is the frequency of a wave with 1 msec period?
A: 10,000 HZ
B: 1,000 kHz
C: 1 kHz
D: 1 MHz - correct answer -C: 1 kHz
_______________ is the distance covered by one cycle.
A: pulse length
B: wavelength
C: cycle distance
D: cycle duration - correct answer -B: wavelength
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: range resolution
Propagation speed = _____ x wavelength.
A: pulse duration
B: period
, C: propagation speed
D: frequency - correct answer -D: frequency
As sa sresult sof sthe s__________________ spropagation sspeed sincreases.
A: sincreasing sstiffness sand sincreasing sdensity
B: sincreasing sstiffness sand sincreasing selasticity
C: sdecreasing scompressibility sand sdecreasing sdensity
D: sdecreasing sstiffness sand sdecreasing sdensity s- scorrect s sanswer s-C: sdecreasing
scompressibility sand sdecreasing sdensity
Put sin sdecreasing sorder sof spropagation sspeed.
A: sgas
B: sliquid
C: ssolid s- scorrect s sanswer s-C: ssolid, sB: sliquid, sand sA: sgas
In sthe ssame smedium, sif sthe sfrequency sof sUS sis sincreased sfrom s0.77 sMHz sto s1.54 sMHz,
swhat shappens sto sthe swavelength?
A: sdoubles
B: shalved
C: sremains sthe ssame
D: s4 stimes sgreater s- scorrect s sanswer s-B: shalved
A ssound swave's sfrequency sis s10 sMHz. sThe swave sis straveling sin ssoft stissue. sWhat sis sthe
swavelength?
A: s0.15 smm
B: s1.54 smm
C: s0.77 smm
E: s10 sMHz s- scorrect s sanswer s-A: s0.15 smm
QUESTIONS & ANSWERS WITH DETAILED
RATIONALES | INSTANT PDF DOWNLOAD
Sound waves are:
A: electric
B: mechanical, transverse
C: spectral
D: longitudinal, mechanical - correct answer -D: longitudinal, mechanical
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 - correct answer -C: 1,500 m/s
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 - correct answer -D: 15,000 Hz
Which is not an acoustic variable?
A: density
B: pressure
C: distance
D: intensity - correct answer -D: intensity
,The effects of soft tissue on US are called:
A: acoustic proliferation properties
B: dynamic effects
C: acoustic propagation properties
D: biologic effects - correct answer -C: acoustic propagation properties
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: two waves with identical frequency
must interfere constructively
Put in decreasing order:
A: deca
B: deci
C: micro
D: centi - correct answer -A: deca, B: deci, D: centi, and C: micro
_______________ is the time to complete one cycle.
A: pulse duration
B: pulse period
C: period
D: duration period - correct answer -C: period
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 kHz
E: 15 Hz - correct answer -A: 30 KHz
What is the frequency of a wave with 1 msec period?
A: 10,000 HZ
B: 1,000 kHz
C: 1 kHz
D: 1 MHz - correct answer -C: 1 kHz
_______________ is the distance covered by one cycle.
A: pulse length
B: wavelength
C: cycle distance
D: cycle duration - correct answer -B: wavelength
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: range resolution
Propagation speed = _____ x wavelength.
A: pulse duration
B: period
, C: propagation speed
D: frequency - correct answer -D: frequency
As sa sresult sof sthe s__________________ spropagation sspeed sincreases.
A: sincreasing sstiffness sand sincreasing sdensity
B: sincreasing sstiffness sand sincreasing selasticity
C: sdecreasing scompressibility sand sdecreasing sdensity
D: sdecreasing sstiffness sand sdecreasing sdensity s- scorrect s sanswer s-C: sdecreasing
scompressibility sand sdecreasing sdensity
Put sin sdecreasing sorder sof spropagation sspeed.
A: sgas
B: sliquid
C: ssolid s- scorrect s sanswer s-C: ssolid, sB: sliquid, sand sA: sgas
In sthe ssame smedium, sif sthe sfrequency sof sUS sis sincreased sfrom s0.77 sMHz sto s1.54 sMHz,
swhat shappens sto sthe swavelength?
A: sdoubles
B: shalved
C: sremains sthe ssame
D: s4 stimes sgreater s- scorrect s sanswer s-B: shalved
A ssound swave's sfrequency sis s10 sMHz. sThe swave sis straveling sin ssoft stissue. sWhat sis sthe
swavelength?
A: s0.15 smm
B: s1.54 smm
C: s0.77 smm
E: s10 sMHz s- scorrect s sanswer s-A: s0.15 smm
