Comprehensive Exam SPI Questions And
Answers
Sound waves are: -
correct answer ✅Longitudinal, mechanical
This speed of ultrasound in soft tissue is closest to: -
correct answer ✅1,500m/s
The frequency closest to the lower limit of ultrasound is: -
correct answer ✅15,000 Hz
Which is NOT an acoustic variable? -
correct answer ✅Intensity
The affects of soft tissue on ultrasound are called: -
correct answer ✅Acoustic propagation properties
All of the following are true EXCEPT: -
correct answer ✅Two waves with identical frequencies must
interfere constructively
Put in decreasing order: -
correct answer ✅deca - deci - centi - micro
,Comprehensive Exam SPI Questions And
Answers
_______ is the time to complete one cycle. -
correct answer ✅period
Which of the following sound waves is ultrasonic and LEAST useful
in diagnostic imaging? -
correct answer ✅30 KHz
What is the frequency of a wave with 1 msec period? -
correct answer ✅1 kHz
________ is the distance covered by one cycle. -
correct answer ✅Wavelength
Which of the following is determined by the source and the
medium? -
correct answer ✅Range resolution
Propagation speed = _________ x wavelength -
correct answer ✅Frequency
,Comprehensive Exam SPI Questions And
Answers
As a result of _______ the propagation speed increases. -
correct answer ✅Decreasing compressibility & decreasing density
Put in decreasing order of propagation speed: -
correct answer ✅Solid - liquid - gas
If the frequency of ultrasound is increased from 0.77 MHz to 1.54
MHz, what happens to the wavelength? -
correct answer ✅halved
A sound wave's frequency is 10 MHz. The wave is traveling in soft
tissue. What is its wavelength? -
correct answer ✅0.15 mm
If the frequency of an ultrasound wave is doubled, what happens to
the period? -
correct answer ✅halved
If the frequency of ultrasound is increased from 0.77 MHz to 1.54
MHz, what happens to the propagation speed? -
correct answer ✅Remains the same
, Comprehensive Exam SPI Questions And
Answers
The units of pulse repetition frequency are: -
correct answer ✅per minute
The time from the beginning of a pulse until it's end is known as
________. -
correct answer ✅Pulse duration
What happens to the speed of sound in a medium when the bulk
modulus of the medium INcreases? -
correct answer ✅speed of sound increases
______ resolution is determined by the spatial pulse length. -
correct answer ✅Radial or axial resolution
It's a waves amplitude is doubled, what happens to the power? -
correct answer ✅Quadrupled
Power of sound has units of _______. -
correct answer ✅Watts
Answers
Sound waves are: -
correct answer ✅Longitudinal, mechanical
This speed of ultrasound in soft tissue is closest to: -
correct answer ✅1,500m/s
The frequency closest to the lower limit of ultrasound is: -
correct answer ✅15,000 Hz
Which is NOT an acoustic variable? -
correct answer ✅Intensity
The affects of soft tissue on ultrasound are called: -
correct answer ✅Acoustic propagation properties
All of the following are true EXCEPT: -
correct answer ✅Two waves with identical frequencies must
interfere constructively
Put in decreasing order: -
correct answer ✅deca - deci - centi - micro
,Comprehensive Exam SPI Questions And
Answers
_______ is the time to complete one cycle. -
correct answer ✅period
Which of the following sound waves is ultrasonic and LEAST useful
in diagnostic imaging? -
correct answer ✅30 KHz
What is the frequency of a wave with 1 msec period? -
correct answer ✅1 kHz
________ is the distance covered by one cycle. -
correct answer ✅Wavelength
Which of the following is determined by the source and the
medium? -
correct answer ✅Range resolution
Propagation speed = _________ x wavelength -
correct answer ✅Frequency
,Comprehensive Exam SPI Questions And
Answers
As a result of _______ the propagation speed increases. -
correct answer ✅Decreasing compressibility & decreasing density
Put in decreasing order of propagation speed: -
correct answer ✅Solid - liquid - gas
If the frequency of ultrasound is increased from 0.77 MHz to 1.54
MHz, what happens to the wavelength? -
correct answer ✅halved
A sound wave's frequency is 10 MHz. The wave is traveling in soft
tissue. What is its wavelength? -
correct answer ✅0.15 mm
If the frequency of an ultrasound wave is doubled, what happens to
the period? -
correct answer ✅halved
If the frequency of ultrasound is increased from 0.77 MHz to 1.54
MHz, what happens to the propagation speed? -
correct answer ✅Remains the same
, Comprehensive Exam SPI Questions And
Answers
The units of pulse repetition frequency are: -
correct answer ✅per minute
The time from the beginning of a pulse until it's end is known as
________. -
correct answer ✅Pulse duration
What happens to the speed of sound in a medium when the bulk
modulus of the medium INcreases? -
correct answer ✅speed of sound increases
______ resolution is determined by the spatial pulse length. -
correct answer ✅Radial or axial resolution
It's a waves amplitude is doubled, what happens to the power? -
correct answer ✅Quadrupled
Power of sound has units of _______. -
correct answer ✅Watts
