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ARDMS SPI Practice Exam B with 100% correct answers | verified | latest update 2024
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ARDMS SPI Practice Exam B with 100% correct answers | verified | latest update 2024
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ARDMS SPI Practice Exam BA sound wave propagates fastest through which substance? - ✅✅-a) Bone
b) Muscle
c) Fat
d) Gas
Frequency compounding improves image quality by doing what? - ✅✅-a)
Increasing frame rate
b) Improving dynamic range
c) Reducing speckle
d) Reducing grading lobes
✅✅
If red blood cells are approaching a 5 MHz doppler transducer at a sppeed of 75
cm/s, what is the appropriate received ultrasound frequency? - -a) 4,500
kHz
b) 4,995 kHz
c) 5,005 kHz
d) 5,500 kHz
✅✅
In an unfocused transducer, what is the region between the transducer face and
the point where the beam diverges? - -a) Side lobe
b) Focal Zone
c) Near field
d) Far field
In this image, most of the blood flow is in which direction? - ✅✅-a) Right to left
b) Left to right
c) Bidirectional
d) Indetermiate
In this image, which target group is used to evaluate dead zone? - ✅✅-a) A
b) B
c) C
d) D
, ✅✅
The thermal index (TI) is most affected by which type of interaction between
sound and tissue? - -a) Reflection
b) Absorption
c) Scattering
d) Refraction
✅✅
What adjustment should be made to avoid the aliasing displayed on this spectral
doppler image seen on spectral analysis? - -a) Reposition sample volume
so it is deeper.
b) Decrease acoustic power
c) Change the doppler angle from 60 to 45 degrees
d) Decrease the transducer freq
✅✅
What caused the color pattern demonstrated in the artery indicated by the arrow
in this image? - -a) Superimposed venous flow
b) Aliasing
c) Flow reversal
d) Color side lobe artifact
What causes range ambiguity artifacts? - ✅✅-a) Receiver overload
b) Pulser overload
c) PRF too high
d) PRF too low
What determines the center freq of a transducer? - ✅✅-a) Diameter
b) Shape
c) Matching Layer
d) Thickness
What is a benefit of using contrast agents? - ✅✅ -a) Output power can be
increased after contrast administration to improve visualization
b) Increased amplitude of the returning doppler signals
c) Harmonic signals produced by contrast agents are weaker than those
produced by tissue
d) Frame rate is improved when interrogating contrast with power doppler
What is increased if the pulse duration is decreased? - ✅✅-a) Bandwidth
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