Edelman SPI Review EXAM NEWEST ACTUAL EXAM
EDELMAN SPI REVIEW EXAM NEWEST ACTUAL EXAM COMPLETE
ALL QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BRAND NEW!!
The characteristics of four media are described below. Which of the media has the
slowest propagation speed?
A. high density and high elasticity
B. low density and high stiffness
C. low stiffness and low density
D. low compressibility and low stiffness - ANSWER-A. high density and high
elasticity
Speed is determined by density and stiffness of a medium (the opposite of
stiffness is elasticity). When a medium has high elasticity, its speed is slow. A
medium with a high density also has a slow speed. The medium described in
choice A has the lowest propagation speed.
Compressibility describes a characteristic of a medium. Which two terms describe
the same property as compressibility?
A. density and stiffness
B. density and conductance
C. stiffness and elasticity
D. elastance and impedance - ANSWER-C. stiffness and elasticity
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, Edelman SPI Review EXAM NEWEST ACTUAL EXAM
The compressibility of a medium describes its ability to reduce its volume when a
force is applied to it. For example, a marshmallow is compressible because when it
is squeezed, it gets smaller. Elasticity has the same meaning as compressibility.
Stiffness describes this same characteristic; however, stiffness is the opposite of
compressibility.
When the elasticity of a medium is high, the ________ is high.
A. stiffness
B. propagation speed
C. compressibility
D. reflectivity - ANSWER-C. compressibility
Two sound waves with frequencies of 5 and 3 MHz travel to a depth of 8cm in a
medium and then reflect back to the surface of the body. Which acoustic wave
arrives first at the surface of the body?
A. the 5 MHz wave
B. the 3 MHz wave
C. neither
D. cannot be determined - ANSWER-C. neither
What are the units of pulse duration?
A. units of frequency (Hz, etc.)
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, Edelman SPI Review EXAM NEWEST ACTUAL EXAM
B. msec only
C. units of time (sec, years, etc.)
D. units of distance (feet, etc.) - ANSWER-C. units of time
What determines the pulse duration?
A. the source of the wave
B. the medium in which the pulse travels
C. both A and B
D. neither A nor B - ANSWER-A. the source of the wave
The pulse duration is the actual time that a transducer is creating one sound pulse
and is determined by the ultrasound system. Pulse duration does not include the
listening time.
The pulse duration is expressed in the same units as the
A. period
B. PRF
C. wavelength
D. density - ANSWER-A. period
What is the pulse duration equal to?
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, Edelman SPI Review EXAM NEWEST ACTUAL EXAM
A. frequency multiplied by period
B. period multiplied by wavelength
C. the number of cycles in the pulse divided by the wavelength
D. period multiplied by the number of cycles in the pulse - ANSWER-D. period
multiplied by the number of cycles in the pulse
What happens to the pulse duration when a sonographer decreases the maximum
imaging depth in an ultrasound scan?
.
A. increases
B. decreases
C. remains the same
D. cannot be determined - ANSWER-C. remains the same
The time that a transducer is "pulsing" does not change with alterations in depth
of view.
The spatial pulse length describes certain characteristics of an ultrasound pulse.
What are its units?
A. time
B. hertz
C. meters
D. none; it is unitless - ANSWER-C. meters
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EDELMAN SPI REVIEW EXAM NEWEST ACTUAL EXAM COMPLETE
ALL QUESTIONS AND CORRECT DETAILED ANSWERS (VERIFIED
ANSWERS) |ALREADY GRADED A+||BRAND NEW!!
The characteristics of four media are described below. Which of the media has the
slowest propagation speed?
A. high density and high elasticity
B. low density and high stiffness
C. low stiffness and low density
D. low compressibility and low stiffness - ANSWER-A. high density and high
elasticity
Speed is determined by density and stiffness of a medium (the opposite of
stiffness is elasticity). When a medium has high elasticity, its speed is slow. A
medium with a high density also has a slow speed. The medium described in
choice A has the lowest propagation speed.
Compressibility describes a characteristic of a medium. Which two terms describe
the same property as compressibility?
A. density and stiffness
B. density and conductance
C. stiffness and elasticity
D. elastance and impedance - ANSWER-C. stiffness and elasticity
1|Page
, Edelman SPI Review EXAM NEWEST ACTUAL EXAM
The compressibility of a medium describes its ability to reduce its volume when a
force is applied to it. For example, a marshmallow is compressible because when it
is squeezed, it gets smaller. Elasticity has the same meaning as compressibility.
Stiffness describes this same characteristic; however, stiffness is the opposite of
compressibility.
When the elasticity of a medium is high, the ________ is high.
A. stiffness
B. propagation speed
C. compressibility
D. reflectivity - ANSWER-C. compressibility
Two sound waves with frequencies of 5 and 3 MHz travel to a depth of 8cm in a
medium and then reflect back to the surface of the body. Which acoustic wave
arrives first at the surface of the body?
A. the 5 MHz wave
B. the 3 MHz wave
C. neither
D. cannot be determined - ANSWER-C. neither
What are the units of pulse duration?
A. units of frequency (Hz, etc.)
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, Edelman SPI Review EXAM NEWEST ACTUAL EXAM
B. msec only
C. units of time (sec, years, etc.)
D. units of distance (feet, etc.) - ANSWER-C. units of time
What determines the pulse duration?
A. the source of the wave
B. the medium in which the pulse travels
C. both A and B
D. neither A nor B - ANSWER-A. the source of the wave
The pulse duration is the actual time that a transducer is creating one sound pulse
and is determined by the ultrasound system. Pulse duration does not include the
listening time.
The pulse duration is expressed in the same units as the
A. period
B. PRF
C. wavelength
D. density - ANSWER-A. period
What is the pulse duration equal to?
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, Edelman SPI Review EXAM NEWEST ACTUAL EXAM
A. frequency multiplied by period
B. period multiplied by wavelength
C. the number of cycles in the pulse divided by the wavelength
D. period multiplied by the number of cycles in the pulse - ANSWER-D. period
multiplied by the number of cycles in the pulse
What happens to the pulse duration when a sonographer decreases the maximum
imaging depth in an ultrasound scan?
.
A. increases
B. decreases
C. remains the same
D. cannot be determined - ANSWER-C. remains the same
The time that a transducer is "pulsing" does not change with alterations in depth
of view.
The spatial pulse length describes certain characteristics of an ultrasound pulse.
What are its units?
A. time
B. hertz
C. meters
D. none; it is unitless - ANSWER-C. meters
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