EDELMAN SPI FINAL EXAM 2
VERSIONS 2025 BANK CURRENTLY
TESTING COMPLETE 600 QUESTIONS
WITH DETAILED VERIFIED ANSWERS
/ALREADY GRADED A+
An acoustic wave is traveling through soft tissue. Its
intensity undergoes six decibels of attenuation. How does
the final intensity of the wave relate to the intensity of the
wave when it started its journey?
A. it is now tour times larger
B. it is now six times larger
C. it is now one-fourth as large
D. it is now one-tenth as large - ....ANSWER...C. it is now
one-fourth as large
Which of the following is not one of the physical processes
that contributes to attenuation of ultrasound waves
passing through soft tissue?
,A. reflection
B. redirection of sound in many directions
C. focusing
D. conversion of acoustic energy to heat -
....ANSWER...C. focusing
An acoustic pulse reflects from a very smooth boundary
where the irregularities on the surface of the boundary are
much smaller than the pulse's wavelength. What type of
reflection is most likely to occur under these
circumstances?
A. partial
B. Rayleigh
C. specular
D. total - ....ANSWER...C. specular
A sound wave reaches a rough or irregular border between
two media. Under these explicit circumstances, which
process is most likely to occur?
,A. backscatter reflection
B. specular reflection
C. Rayleigh scattering
D. refraction - ....ANSWER...A. backscatter reflection
The smoothness or roughness of a boundary will help to
determine what form of reflection takes place. Backscatter
is likely to occur when the boundary has irregularities that
are larger than the wavelength of the incident acoustic
pulse. Diffuse reflection is another name for backscatter.
Which of the following is true of diffuse reflections?
A. they're created by smooth boundaries
B. they're created by large reflectors
C. sound reflects in many directions
D. they do not appear in soft tissue - ....ANSWER...C.
sound reflects in many directions
, What is the uniform dispersion of a sound wave in many
different directions after striking a very small particle?
A. microscattering
B. backscattering
C. Rayleigh scattering
D. total absorption - ....ANSWER...C. Rayleigh scattering
Rayleigh scattering is the redirection of an acoustic wave
in many different directions as a result of striking a small
particle. When Rayleigh scattering occurs, the dimension
of the reflecting particle is usually less than the
wavelength of the ultrasound wave. The amount of
Rayleigh scattering also depends on the frequency of the
ultrasound.
Which of the following is considered a Rayleigh scatter?
A. bone
B. liver
C. muscle
VERSIONS 2025 BANK CURRENTLY
TESTING COMPLETE 600 QUESTIONS
WITH DETAILED VERIFIED ANSWERS
/ALREADY GRADED A+
An acoustic wave is traveling through soft tissue. Its
intensity undergoes six decibels of attenuation. How does
the final intensity of the wave relate to the intensity of the
wave when it started its journey?
A. it is now tour times larger
B. it is now six times larger
C. it is now one-fourth as large
D. it is now one-tenth as large - ....ANSWER...C. it is now
one-fourth as large
Which of the following is not one of the physical processes
that contributes to attenuation of ultrasound waves
passing through soft tissue?
,A. reflection
B. redirection of sound in many directions
C. focusing
D. conversion of acoustic energy to heat -
....ANSWER...C. focusing
An acoustic pulse reflects from a very smooth boundary
where the irregularities on the surface of the boundary are
much smaller than the pulse's wavelength. What type of
reflection is most likely to occur under these
circumstances?
A. partial
B. Rayleigh
C. specular
D. total - ....ANSWER...C. specular
A sound wave reaches a rough or irregular border between
two media. Under these explicit circumstances, which
process is most likely to occur?
,A. backscatter reflection
B. specular reflection
C. Rayleigh scattering
D. refraction - ....ANSWER...A. backscatter reflection
The smoothness or roughness of a boundary will help to
determine what form of reflection takes place. Backscatter
is likely to occur when the boundary has irregularities that
are larger than the wavelength of the incident acoustic
pulse. Diffuse reflection is another name for backscatter.
Which of the following is true of diffuse reflections?
A. they're created by smooth boundaries
B. they're created by large reflectors
C. sound reflects in many directions
D. they do not appear in soft tissue - ....ANSWER...C.
sound reflects in many directions
, What is the uniform dispersion of a sound wave in many
different directions after striking a very small particle?
A. microscattering
B. backscattering
C. Rayleigh scattering
D. total absorption - ....ANSWER...C. Rayleigh scattering
Rayleigh scattering is the redirection of an acoustic wave
in many different directions as a result of striking a small
particle. When Rayleigh scattering occurs, the dimension
of the reflecting particle is usually less than the
wavelength of the ultrasound wave. The amount of
Rayleigh scattering also depends on the frequency of the
ultrasound.
Which of the following is considered a Rayleigh scatter?
A. bone
B. liver
C. muscle
