Davies Physics Review (Part 1) (Patient
care, safety & communications) Exam
2026 Questions and Answers
What action below would be most in keeping with the ALARA principle while
performing a diagnostic ultrasound exam?
A. Allow multiple students to scan an obstetric patient because the fetus us in a
good position for imaging
B. Prolong the sonographic examination to make videos of the fetus for each
family member.
C. Complete the diagnostic scan in a timely fashion at the lowest output power that
achieves a quality image.
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,D. Maximize the acoustic output to brighten the overall image.
E. Extend the sonographic examination beyond the intended scope of the ex am
requisition - Correct answer-C
During performance of an obstetric ultrasound exam, you adjust the system
parameters to improve the image. Which of the following parameters would
increase acoustic exposure?
A. increase receiver gain
B. increase TGC
C. Increase frequency
D. Increase transmit power
E. increase frame averaging (persistence) - Correct answer-D
To minimize the risk of biologic effects of ultrasound to the fetus, which imaging
mode tradeoff would be most applicable?
A. Use M-mode instead of pulsed-wave Doppler to measure the fetal heart rate
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, B. Use color Doppler instead of power Doppler to image the umbilical cord.
C. Use pulsed-wave Doppler instead of power Doppler to evaluate the fetal heart.
D. Use harmonics instead of fundamental to image the fetal spine.
E. All of the above - Correct answer-A
What potential bioeffect occurs through absorption of sound energy by tissue?
a. Cavitation
B. Heating
C. Attenuation
D. Refelction
E. Refraction - Correct answer-B
When practicing universal precautions, you should do all the following EXCEPT:
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care, safety & communications) Exam
2026 Questions and Answers
What action below would be most in keeping with the ALARA principle while
performing a diagnostic ultrasound exam?
A. Allow multiple students to scan an obstetric patient because the fetus us in a
good position for imaging
B. Prolong the sonographic examination to make videos of the fetus for each
family member.
C. Complete the diagnostic scan in a timely fashion at the lowest output power that
achieves a quality image.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,D. Maximize the acoustic output to brighten the overall image.
E. Extend the sonographic examination beyond the intended scope of the ex am
requisition - Correct answer-C
During performance of an obstetric ultrasound exam, you adjust the system
parameters to improve the image. Which of the following parameters would
increase acoustic exposure?
A. increase receiver gain
B. increase TGC
C. Increase frequency
D. Increase transmit power
E. increase frame averaging (persistence) - Correct answer-D
To minimize the risk of biologic effects of ultrasound to the fetus, which imaging
mode tradeoff would be most applicable?
A. Use M-mode instead of pulsed-wave Doppler to measure the fetal heart rate
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
, B. Use color Doppler instead of power Doppler to image the umbilical cord.
C. Use pulsed-wave Doppler instead of power Doppler to evaluate the fetal heart.
D. Use harmonics instead of fundamental to image the fetal spine.
E. All of the above - Correct answer-A
What potential bioeffect occurs through absorption of sound energy by tissue?
a. Cavitation
B. Heating
C. Attenuation
D. Refelction
E. Refraction - Correct answer-B
When practicing universal precautions, you should do all the following EXCEPT:
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
