Ultrasound Physics - Mock Exam Questions for SPI UPDATED ACTUAL
QUESTIONS AND CORRECT ANSWERS
Which of the following transducers will have the worst Vector array, 3 MHz
axial resolution?
a. Vector array, 3 MHz
b. Linear Sequential Array, 6 MHZ
c. Linear Phased Array 7.5 MHZ
d. Annular Array, 6 MHz
A sound wave is traveling in the body and propagates 75%
from muscle to air. What percentage of the sound wave is
most likely reflected at the muscle-air boundary?
a. 0.5%
b. 75%
c. 25%
d. 5%
e. 99%
Which of the following lists is in decreasing order? mega, kilo, deca, milk, nano
a. mega, kilo, deca, milli, nano
b. centi, mill, kilo, mega, nano
c. micro, milli, deci, kilo, mega
d. micro, kilo, mega, deci, milli
e. mega, micro, deci, milli, hecto
,During a diagnostic exam, which of these statements is The listening time may be one-thousand times longer than the pulse duration.
most correct when describing the pulsed echo
characteristics of an ultrasound system.
a. The listening time may be one-thousand times longer
than the pulse duration.
b. the pulse duration is longer than the pulse repetition
period.
c. The pulse duration is similar to the listening time.
d. The duty factor has a value close to 1
e. The pulse repitition period is similar to the period.
Which of the following parameters is determined by both wavelength
the ultrasound system and the medium through which the
sound travels?
a. period
b. frequency
c. temperature
d. wavelength
e. velocity of the sound
You should be familiar with the formula L= C/F. propagation speed
What does "C" stand for in this equation?
a. characteristic impedence
b. density
c. compliance
d. compressability
e. propagation speed
Which of the following lists is in increasing order? micro, milli, deci, kilo, mega
a. mega, kilo, milli, nano, centi
b. centi, milli, kilo, mega, nano
c. micro, kilo, milli, deci, mega
d. micro, milli, deci, kilo, mega
e. mega, micro, deci, mill, hecto
Which of the following statements about speed and Attenuation through and propagation speed in a particular medium are unrelated
attenuation are true? to each other.
a. Attenuation through and propagation speed in a
particular medium are unrelated to each other.
b. When a sound beam travels faster in a medium, the
attenuation is less.
c. When a sound beam travels slower in a medium, the
attenuation is more.
, A sonographer is scanning a patient with a 3 MHz probe The 3 MHz beam will have a longer wavelength than the 6 MHz beam
and replaces it with a 6 MHz probe. All of the following
statements are FALSE, except:
a. The 6 MHz beam will travel at a lower speed than the 3
MHz beam
b. The 6 MHz beam will travel faster than the 3 MHz
beam
c. The 3 MHz beam will have a higher frequency than the
6 MHz beam
d. The 6 MHZ beam will have a longer period than the 3
MHz beam
e. The 3 MHz beam will have a longer wavelength than
the 6 MHz beam
Rank the following media in increasing order of air, lung, fat, soft tissue, bone
propagation speed.
a. muscle, liver, fat, bone, lung
b. air, lung, fat, soft tissue, bone
c. bone, muscle, fat, lung, air
d. air, fat, bone, blood, water
e. liver, kidney, fat, muscle, brain
Which of the following intensities is most significant with SPTA
regard to the study of bioeffects?
a. SATP
b. SATA
c. SAPA
d. SPTA
e. SPTP
Which of the following terms does not belong with the increased pulse duration
others?
a. decreased depth of view
b. increased pulse duration
c. increased pulse repitition frequency
d. decreased pulse repitition period
e. high duty factor
What is a cyclical region of low density called? rarefaction
a. compression
b. Pascal
c. rarefaction
d. density
e. impedence
A sonographer adjusts the outout of an ultrasound power is increased by a factor of nine
system by increasing the amplitude by a factor of three.
Which of the following statements is true?
a. power is increased by a factor of three
b. wavelength is increased by a factor of nine
c. power is increased by a factor of nine
d. frequency in increased by a factor of three
e. period is decreased by a factor of three
QUESTIONS AND CORRECT ANSWERS
Which of the following transducers will have the worst Vector array, 3 MHz
axial resolution?
a. Vector array, 3 MHz
b. Linear Sequential Array, 6 MHZ
c. Linear Phased Array 7.5 MHZ
d. Annular Array, 6 MHz
A sound wave is traveling in the body and propagates 75%
from muscle to air. What percentage of the sound wave is
most likely reflected at the muscle-air boundary?
a. 0.5%
b. 75%
c. 25%
d. 5%
e. 99%
Which of the following lists is in decreasing order? mega, kilo, deca, milk, nano
a. mega, kilo, deca, milli, nano
b. centi, mill, kilo, mega, nano
c. micro, milli, deci, kilo, mega
d. micro, kilo, mega, deci, milli
e. mega, micro, deci, milli, hecto
,During a diagnostic exam, which of these statements is The listening time may be one-thousand times longer than the pulse duration.
most correct when describing the pulsed echo
characteristics of an ultrasound system.
a. The listening time may be one-thousand times longer
than the pulse duration.
b. the pulse duration is longer than the pulse repetition
period.
c. The pulse duration is similar to the listening time.
d. The duty factor has a value close to 1
e. The pulse repitition period is similar to the period.
Which of the following parameters is determined by both wavelength
the ultrasound system and the medium through which the
sound travels?
a. period
b. frequency
c. temperature
d. wavelength
e. velocity of the sound
You should be familiar with the formula L= C/F. propagation speed
What does "C" stand for in this equation?
a. characteristic impedence
b. density
c. compliance
d. compressability
e. propagation speed
Which of the following lists is in increasing order? micro, milli, deci, kilo, mega
a. mega, kilo, milli, nano, centi
b. centi, milli, kilo, mega, nano
c. micro, kilo, milli, deci, mega
d. micro, milli, deci, kilo, mega
e. mega, micro, deci, mill, hecto
Which of the following statements about speed and Attenuation through and propagation speed in a particular medium are unrelated
attenuation are true? to each other.
a. Attenuation through and propagation speed in a
particular medium are unrelated to each other.
b. When a sound beam travels faster in a medium, the
attenuation is less.
c. When a sound beam travels slower in a medium, the
attenuation is more.
, A sonographer is scanning a patient with a 3 MHz probe The 3 MHz beam will have a longer wavelength than the 6 MHz beam
and replaces it with a 6 MHz probe. All of the following
statements are FALSE, except:
a. The 6 MHz beam will travel at a lower speed than the 3
MHz beam
b. The 6 MHz beam will travel faster than the 3 MHz
beam
c. The 3 MHz beam will have a higher frequency than the
6 MHz beam
d. The 6 MHZ beam will have a longer period than the 3
MHz beam
e. The 3 MHz beam will have a longer wavelength than
the 6 MHz beam
Rank the following media in increasing order of air, lung, fat, soft tissue, bone
propagation speed.
a. muscle, liver, fat, bone, lung
b. air, lung, fat, soft tissue, bone
c. bone, muscle, fat, lung, air
d. air, fat, bone, blood, water
e. liver, kidney, fat, muscle, brain
Which of the following intensities is most significant with SPTA
regard to the study of bioeffects?
a. SATP
b. SATA
c. SAPA
d. SPTA
e. SPTP
Which of the following terms does not belong with the increased pulse duration
others?
a. decreased depth of view
b. increased pulse duration
c. increased pulse repitition frequency
d. decreased pulse repitition period
e. high duty factor
What is a cyclical region of low density called? rarefaction
a. compression
b. Pascal
c. rarefaction
d. density
e. impedence
A sonographer adjusts the outout of an ultrasound power is increased by a factor of nine
system by increasing the amplitude by a factor of three.
Which of the following statements is true?
a. power is increased by a factor of three
b. wavelength is increased by a factor of nine
c. power is increased by a factor of nine
d. frequency in increased by a factor of three
e. period is decreased by a factor of three
