Ultrasound Physics Final review quizzes and ch.
reviews
As the path of ultrasound remains the same
increases in length, the
attenuation coefficient of
ultrasound in soft tissue:
a. increases
b. decreases
c. remains the same
The imaging depth during it is doubled
an ultrasound exam is 10 cm.
The sonographer adjusts it to 20
cm. What happens to the
PRP?
a. it is unchanged
b. it is doubled
c. it is halved
,d. it is 20 times longer
The active element is: is double the thickness of the matching layer
a. 1/4 of a wavelength thick
b. gives the transducer a high Q
factor
c. is double the thickness of
the matching layer
d. only creates low frequencies
when it has a high
propagation speed
All of the following correctly higher sensitivity
describe an imaging
transducer EXCEPT:
a.high
sensitivity
b.low Q
c. wide bandwidth
d. damped
, Every +3 dB means that the double
intensity will:
a. double
b. halve
c. triple
d. increase frequency
If the initial intensity of a sound negative
beam is more than the final
intensity, then the change in
dB is:
a.negative
b.positive
c.unchanged
d.unable to calculate
Which of the following does higher duty factor
NOT describe deep imaging?
a. more listening
b. lower PRF
c. longer PRP
d. higher duty factor
Spatial refers to: distance or space
a. peak maximum value
b. average value
c. pulse duration
d. listening time
e. distance or space
reviews
As the path of ultrasound remains the same
increases in length, the
attenuation coefficient of
ultrasound in soft tissue:
a. increases
b. decreases
c. remains the same
The imaging depth during it is doubled
an ultrasound exam is 10 cm.
The sonographer adjusts it to 20
cm. What happens to the
PRP?
a. it is unchanged
b. it is doubled
c. it is halved
,d. it is 20 times longer
The active element is: is double the thickness of the matching layer
a. 1/4 of a wavelength thick
b. gives the transducer a high Q
factor
c. is double the thickness of
the matching layer
d. only creates low frequencies
when it has a high
propagation speed
All of the following correctly higher sensitivity
describe an imaging
transducer EXCEPT:
a.high
sensitivity
b.low Q
c. wide bandwidth
d. damped
, Every +3 dB means that the double
intensity will:
a. double
b. halve
c. triple
d. increase frequency
If the initial intensity of a sound negative
beam is more than the final
intensity, then the change in
dB is:
a.negative
b.positive
c.unchanged
d.unable to calculate
Which of the following does higher duty factor
NOT describe deep imaging?
a. more listening
b. lower PRF
c. longer PRP
d. higher duty factor
Spatial refers to: distance or space
a. peak maximum value
b. average value
c. pulse duration
d. listening time
e. distance or space
