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SPI PRACTICE EXAM LATEST QUIZZES & ANS!!
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SPI PRACTICE EXAM LATEST QUIZZES & ANS!!
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Name: Score:129 Multiple choice questions
Term 1 of 129
In order to add more spectral doppler waveforms to the display, what setting on the machine
should be adjusted?
PRF
sweep speed
heart rate
gain
Term 2 of 129
Which of the following transducers is also referred to as a sector or vector?
linear sequential array
linear phased array
CW
curved sequential array
Term 3 of 129
Which of the following represents the resistive index?
peak systolic velocity minus the end diastolic velocity divided by the mean velocity
peak systolic minus the end diastolic velocity divided by the peak systolic velocity
,Term 4 of 129
What happens to a digital image when the pixel density is increased?
there is more spatial detail
there is less spatial detail
the temporal resolution is increased
there are more shades of gray
Term 5 of 129
trapezoidal image can be obtained with a linear array transducer by _______ steering the beam
manually
randomly
electronically
mechanically
Term 6 of 129
Which of the following will be seen with a stationary reflector?
a. there is a higher reflected freq. compared with the incident freq.
b. there is a lower freq. compared with the incident freq.
c. the incident freq. is = to the reflected freq.
d. the reflected intensity is higher than the incident intensity
the incident freq. = to the reflected freq.
b. Linear phased array
b. The type of cavitation when larger bubbles are produces and subsequently rupture
d. it is in the audible range of sound
,Term 7 of 129
Which of the following will increase the near zone length?
large crystal diameter, low freq.
small crystal diameter, low freq.
large crystal diameter, high freq.
small crystal diameter, high freq.
Term 8 of 129
With 6 bits, what is the largest number of different shades of gray that can be stored?
64
8
256
16
Term 9 of 129
Which of the following best describes transient cavitation?
the type of cavitation in which there is a production of cavernous spaces within the tissue
The type of cavitation when larger bubbles are produces and subsequently rupture
the type of cavitation in which bubbles do not exist.
Term 10 of 129
What is the duty factor of CW doppler?
1
100
0.01
1%
, Term 11 of 129
An increase in PRF would lead to:
An increase in duty factor
an increase in PD
An increase in the number of cycles
a decrease in resolution
Term 12 of 129
When is the Doppler shift the highest?
doppler shift is unrelated to beam angle
when the beam is perpendicular to the direction of flow
when the beam is parallel to the direction of flow
when the beam is at a 45 defree angle to the flow
Term 13 of 129
A reflector is 20mm away from the transducer. how long does it take for sound to get back to the
transducer?
13microsec
20microsec
26microsec
39microsec
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