DAVIES SPI: I. Patient Care, Safety, and
Communication Exam 2026 Questions
and Answers
What should you do to avoid nosocomial and cross-infection with sonographic
probes?
A. Probe cleaning should always precede high-level disinfection
B. Covering a probe with a condom is a sufficient barrier to infection for
intracavitary probes
C. Disinfection using a germicide compatible with the transducer is indicated when
the probe is in contact with mucous membranes
D. Alcohol soak of each probe should occur between patients
E. A and C - Correct answer-E. A and C
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,<Alone, covering the probe with a condom is insufficient. Proper cleaning of the
probe both before and after the procedure is required. Alcohol wipes are not
recommended by manufacturers as they will degrade the transducer surface over
time>
What does the mechanical index indicate on an ultrasound system?
A. The maximum temperature increase in tissue
B. The minimum temperature increase in tissue
C. Acoustic power in milliwatts
D. The likelihood of cavitation during an ultrasound exam
E. Minutes of exposure time before tissue heating is too great - Correct answer-D.
The likelihood of cavitation during an ultrasound exam
<Mechanical index is derived from the peak rarefactional pressure and the
ultrasound frequency, parameters shown to be associated with onset of cavitation>
Which of the following occurs when you use the maximum system gain?
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, A. Increased tissue heating
B. Increased risk of cavitation
C. Fluid Particle streaming
D. Increased sound absorption
E. None of the above - Correct answer-E. None of the above
When scanning with pulsed-wave Doppler, you would affect the acoustic exposure
by changing which of the following?
A. Doppler gain
B. High pass filter
C. Pulse repetition frequency
D. Baseline position
E. Doppler angle - Correct answer-C. Pulse repetition frequency
<The PRF is the number of pulses per second transmitted by the transducer, which
varies with the velocity setting on the spectral display. Increasing PRF has the
potential to increase the acoustic exposure>
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Communication Exam 2026 Questions
and Answers
What should you do to avoid nosocomial and cross-infection with sonographic
probes?
A. Probe cleaning should always precede high-level disinfection
B. Covering a probe with a condom is a sufficient barrier to infection for
intracavitary probes
C. Disinfection using a germicide compatible with the transducer is indicated when
the probe is in contact with mucous membranes
D. Alcohol soak of each probe should occur between patients
E. A and C - Correct answer-E. A and C
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,<Alone, covering the probe with a condom is insufficient. Proper cleaning of the
probe both before and after the procedure is required. Alcohol wipes are not
recommended by manufacturers as they will degrade the transducer surface over
time>
What does the mechanical index indicate on an ultrasound system?
A. The maximum temperature increase in tissue
B. The minimum temperature increase in tissue
C. Acoustic power in milliwatts
D. The likelihood of cavitation during an ultrasound exam
E. Minutes of exposure time before tissue heating is too great - Correct answer-D.
The likelihood of cavitation during an ultrasound exam
<Mechanical index is derived from the peak rarefactional pressure and the
ultrasound frequency, parameters shown to be associated with onset of cavitation>
Which of the following occurs when you use the maximum system gain?
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
, A. Increased tissue heating
B. Increased risk of cavitation
C. Fluid Particle streaming
D. Increased sound absorption
E. None of the above - Correct answer-E. None of the above
When scanning with pulsed-wave Doppler, you would affect the acoustic exposure
by changing which of the following?
A. Doppler gain
B. High pass filter
C. Pulse repetition frequency
D. Baseline position
E. Doppler angle - Correct answer-C. Pulse repetition frequency
<The PRF is the number of pulses per second transmitted by the transducer, which
varies with the velocity setting on the spectral display. Increasing PRF has the
potential to increase the acoustic exposure>
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
