to which acoustic variable
is penetration depth
inversely related?
A.frequency
B.wavelength
C.period
D.propagation speedA
what is the doppler shift
frequency?
A.recieved ultrasound
frequency multiplied by the
transmitted ultrasound
frequency
B.difference between the
transmitted ultrasound
frequency and the received
ultrasound frequency
C.sum of the transmitted
and received ultrasound
frequencies
D.ratio of the transmitted
ultrasound frequency to the
received ultrasound
frequencyB
what is the potential effect
of increasing the pulse
repetition frequency(PRF)?
A.Depth ambiguity
B.Decreased frame rate
C.Poor spatial resolution
D.Decreased penetrationA
what is an advantage of
using pulsed wave doppler
compared to continuous
wave doppler?
A.higher echo sensitivity
B.ability to select sample
depth
C.decreased display of
aliasing
D.improved temporal
resolutionB
nursing what is the advantage of
using pulsed-wave doppler
versus continuous-wave
doppler?
A.allows measurement of
higher velocities
B.increases range
ambiguity
C.reduces the potential for
aliasing
D.provides depth
specificityD
which parameter is target
group C evaluating based
on the image?
A.dead zone
B.dynamic range
C.axial resolution
D.Horizontal distance
accuracyD
In this image, which target
group is used to evaluate
dead zone?A
which factor limits image
frame rate?
A.transducer operating
frequency
B.Sample volume size
C.Speed of sound in tissue
D.Spatial pulse lengthC
when using a 5MHZ
transducer, in which tissue
is the ultrasound
wavelength shortest?
A.fat
B.blood
C.bone
D.muscleA
which term describes the
averaging together of scan
lines from multiple angles
to create one image?
A.harmonic imaging
B.realtime three
dimensional imaging
C.elastography
D.spatial compoundingD
nursing
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