SPI EDELMAN PRACTICE QUESTIONS & ANSWERS
Which of the following statement about Doppler is most correct?
Non directional doppler uses phase-singular processing while bi-directional uses?
a: non-directional Doppler uses phase-singular processing, while bi-directional Doppler
uses phase-quadrature processing.
b: non-directional Doppler uses non-coherent processing, while bi-directional Doppler
uses phase-quadrature processing
c: non-directional Doppler uses autocorrelation processing, while bi-directional Doppler
uses phase-quadrature processing. - Answers :b: non-directional Doppler uses non-
coherent processing, while bi-directional Doppler uses phase-quadrature processing.
pg.311
Which of the following transducers will have the shallowest focus?
a: low frequency, small diameter
b: high frequency, small diameter
c: high frequency, large diameter - Answers :a: low frequency, small diameter pg.136
Which of the following is the correct order of receiver operation?
a: amplification, compensation, compression, reject, demodulation
b: amplification, compression, compensation, demodulation, reject
c: attenuation, amplification, TGC, gain, threshold
d: amplification, demodulation, reject - Answers :d: amplification, demodulation, reject
pg.224
What does a hydrophone measure?
a: doppler frequency of a pulsed wave system
b: dynamic range of an ultrasound imaging system
c: attenuation of sound in soft tissue.
d: receivers gain of an amplifier.
e: acoustic output of an ultrasound imaging system - Answers :acoustic output of an
ultrasound imaging system pg.402
Enhancement artifact appears on an ultrasound scan. Which of the following statements
is true about the structure immediately above the artifact?
a: it is hypoechoic.
b: attenuation properties are too low.
c: there is too little absorption.
d: speed of sound is too high.
e: speed of sound is too low. - Answers :c: there is too little absorption. Pg.361
Which of these terms does not belong with the others?
a: short pulse repetition period
b: shallow imaging
,c: short pulse duration
d: high duty factor
e: high PRF - Answers :c: short pulse duration pg.220 box
All the following operational settings are related to improved temporal resolution
EXCEPT:
a: single focus
b: shallower imaging
c: low line density
d: increased frequency
e: narrow sector - Answers :d: increased frequency pg.198
All the following statements regarding the hemodynamics of a stenosis are true
EXCEPT:
a: pressure is highest upstream from the stenosis.
b: in cases of significant stenosis, the flow pattern downstream from the stenosis may
be steady rather than pulsatile.
c: velocity is highest downstream from the stenosis.
d: turbulence is evident downstream from the stenosis.
e: flow direction changes as blood flows into and out of the stenosis - Answers :c:
velocity is highest downstream from the stenosis. pg.292
A sound wave with a frequency of 5 MHz is travelling in soft tissue. What is the
wavelength of this sound?
a: 0.5 mm
b: 0.3 cm
c: 5 mm
d: 0.3 mm - Answers :d: 0.3 mm
All the following correctly describe dynamic range EXCEPT:
a: relative
b: ratio
c: absolute
d: comparison
e: logarhythmic - Answers :c: absolute
All the following will improve temporal resolution EXCEPT:
a: slower speed of sound in a medium
b: increased line density
c: single rather than multi focus
d: higher frame rate - Answers :b: increased line density
Which of these choices has the greatest effect upon depth of view?
a: pulse repetition period
b: transducer output
c: acoustic impedance
, d: pulse duration
e: spatial pulse length - Answers :a: pulse repetition period
What is the accuracy of reflector depth position on an A-mode, B-mode or M-mode
display called?
a: axial resolution
b: speed error artifact
c: range resolution
d: horizontal calibration
e: depth calibration - Answers :e: depth calibration
All the following are true EXCEPT:
a: Out-of-phase waves interfere destructively.
b: Constructive interference is associated with waves that are in-phase.
c: Waves of different frequencies may exhibit both constructive and destructive
interference at different times.
d: Two waves with identical frequencies must interfere constructively - Answers :d: Two
waves with identical frequencies must interfere constructively
What is the maximum number of shades of gray that can be represented by 5 bits?
a: 32 shades
b: 64 shades
c: 10 shades - Answers :a: 32 shades
How much bigger is a billion (9 zeroes) than a thousand (3 zeroes)?
a: 1,000,000,000
b: 1,000
c: 100
d: 1,000,000
e: 10,000 - Answers :d: 1,000,000
You are performing a quality assurance study on an ultrasound system using a tissue
equivalent phantom. You make an adjustment using a knob on the system console that
changes the appearance of reflector brightness from fully bright to barely visible. What
are you evaluating?
a: system sensitivity
b: vertical calibration
c: dynamic range
d: slice thickness
e: resolution - Answers :a: system sensitivity
Which of the following factors determine the spatial resolution of a monitor?
a: the number of pixels per bit
b: the number of lines per frame
c: dynamic range
d:: the number of bits per inch
Which of the following statement about Doppler is most correct?
Non directional doppler uses phase-singular processing while bi-directional uses?
a: non-directional Doppler uses phase-singular processing, while bi-directional Doppler
uses phase-quadrature processing.
b: non-directional Doppler uses non-coherent processing, while bi-directional Doppler
uses phase-quadrature processing
c: non-directional Doppler uses autocorrelation processing, while bi-directional Doppler
uses phase-quadrature processing. - Answers :b: non-directional Doppler uses non-
coherent processing, while bi-directional Doppler uses phase-quadrature processing.
pg.311
Which of the following transducers will have the shallowest focus?
a: low frequency, small diameter
b: high frequency, small diameter
c: high frequency, large diameter - Answers :a: low frequency, small diameter pg.136
Which of the following is the correct order of receiver operation?
a: amplification, compensation, compression, reject, demodulation
b: amplification, compression, compensation, demodulation, reject
c: attenuation, amplification, TGC, gain, threshold
d: amplification, demodulation, reject - Answers :d: amplification, demodulation, reject
pg.224
What does a hydrophone measure?
a: doppler frequency of a pulsed wave system
b: dynamic range of an ultrasound imaging system
c: attenuation of sound in soft tissue.
d: receivers gain of an amplifier.
e: acoustic output of an ultrasound imaging system - Answers :acoustic output of an
ultrasound imaging system pg.402
Enhancement artifact appears on an ultrasound scan. Which of the following statements
is true about the structure immediately above the artifact?
a: it is hypoechoic.
b: attenuation properties are too low.
c: there is too little absorption.
d: speed of sound is too high.
e: speed of sound is too low. - Answers :c: there is too little absorption. Pg.361
Which of these terms does not belong with the others?
a: short pulse repetition period
b: shallow imaging
,c: short pulse duration
d: high duty factor
e: high PRF - Answers :c: short pulse duration pg.220 box
All the following operational settings are related to improved temporal resolution
EXCEPT:
a: single focus
b: shallower imaging
c: low line density
d: increased frequency
e: narrow sector - Answers :d: increased frequency pg.198
All the following statements regarding the hemodynamics of a stenosis are true
EXCEPT:
a: pressure is highest upstream from the stenosis.
b: in cases of significant stenosis, the flow pattern downstream from the stenosis may
be steady rather than pulsatile.
c: velocity is highest downstream from the stenosis.
d: turbulence is evident downstream from the stenosis.
e: flow direction changes as blood flows into and out of the stenosis - Answers :c:
velocity is highest downstream from the stenosis. pg.292
A sound wave with a frequency of 5 MHz is travelling in soft tissue. What is the
wavelength of this sound?
a: 0.5 mm
b: 0.3 cm
c: 5 mm
d: 0.3 mm - Answers :d: 0.3 mm
All the following correctly describe dynamic range EXCEPT:
a: relative
b: ratio
c: absolute
d: comparison
e: logarhythmic - Answers :c: absolute
All the following will improve temporal resolution EXCEPT:
a: slower speed of sound in a medium
b: increased line density
c: single rather than multi focus
d: higher frame rate - Answers :b: increased line density
Which of these choices has the greatest effect upon depth of view?
a: pulse repetition period
b: transducer output
c: acoustic impedance
, d: pulse duration
e: spatial pulse length - Answers :a: pulse repetition period
What is the accuracy of reflector depth position on an A-mode, B-mode or M-mode
display called?
a: axial resolution
b: speed error artifact
c: range resolution
d: horizontal calibration
e: depth calibration - Answers :e: depth calibration
All the following are true EXCEPT:
a: Out-of-phase waves interfere destructively.
b: Constructive interference is associated with waves that are in-phase.
c: Waves of different frequencies may exhibit both constructive and destructive
interference at different times.
d: Two waves with identical frequencies must interfere constructively - Answers :d: Two
waves with identical frequencies must interfere constructively
What is the maximum number of shades of gray that can be represented by 5 bits?
a: 32 shades
b: 64 shades
c: 10 shades - Answers :a: 32 shades
How much bigger is a billion (9 zeroes) than a thousand (3 zeroes)?
a: 1,000,000,000
b: 1,000
c: 100
d: 1,000,000
e: 10,000 - Answers :d: 1,000,000
You are performing a quality assurance study on an ultrasound system using a tissue
equivalent phantom. You make an adjustment using a knob on the system console that
changes the appearance of reflector brightness from fully bright to barely visible. What
are you evaluating?
a: system sensitivity
b: vertical calibration
c: dynamic range
d: slice thickness
e: resolution - Answers :a: system sensitivity
Which of the following factors determine the spatial resolution of a monitor?
a: the number of pixels per bit
b: the number of lines per frame
c: dynamic range
d:: the number of bits per inch
