Page 1 of 128
Davies Ultrasound Physics exam REVIEW (2 versions)
ALL 500 QUESTIONS AND CORRECT ANSWERS LATEST
UPDATE THIS YEAR NEW!!
QUESTION: To minimize the risk of biological 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.
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. - ANSWER-A. Use M-mode instead of pulsed-wave Doppler to measure the
fetal heart rate.
QUESTION: What potential bioeffect occurs through absorption of sound energy by tissue?
A. Cavitation
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B. Heating
C. Attenuation
D. Reflection
E. Refraction - ANSWER-B. Heating
QUESTION: When practicing universal precautions you should do all of the following EXCEPT:
A: Wear gloves when there is a potential for contact with patient bodily fluids.
B: Change gloves when moving from one patient to another.
C: Wash hands immediately after gloves are removed.
D: Wear face masks or eye protection whenever there is a possibility of blood splashing into
your face.
E: Wash gloves between exams for re-use from one patient to another. - ANSWER-E: Wash
gloves between exams for re-use from one patient to another.
QUESTION: A nosocomial infection is defined as one that:
A. Is resistant to antibiotics
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B. Is restricted to the respiratory system
C. Is hospital-acquired
D. Is not contagious
E. Requires patient isolation - ANSWER-C. Is hospital-acquired
QUESTION: Thermally induced biological effects should be preventable by avoiding a local
tissue temperature increase exceeding:
A: 1 degree C
B: 4 degrees C
C: 10 degrees C
D: 95 degrees F
E: None; thermal effects have no threshold. - ANSWER-A: 1 degree C
Q; Where is the point of maximum intensity in a sound beam?
A: Curie point
B: Fresnel zone
C: Focal point
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D: Fraunhofer zone
E: F number - ANSWER-C: Focal point
QUESTION: What action below would be most in keeping with the ALARA principle while
performing a diagnostic ultrasound examination?
A. Allow multiple students to scan an obstetrical patient because the fetus is in a good position
for imaging.
B. Prolong the sonogram 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.
D. Maximize the acoustic output to brighten the overall image.
E. Extend the sonogram beyond the intended scope of the exam requisition. - ANSWER-C.
Complete the diagnostic scan in a timely fashion at the lowest output power that achieves a
quality image.
QUESTION: During performance of an obstetrical ultrasound exam you adjust the system
parameters to improve the image. Which of the following parameters would increase acoustic
exposure?
4
Davies Ultrasound Physics exam REVIEW (2 versions)
ALL 500 QUESTIONS AND CORRECT ANSWERS LATEST
UPDATE THIS YEAR NEW!!
QUESTION: To minimize the risk of biological 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.
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. - ANSWER-A. Use M-mode instead of pulsed-wave Doppler to measure the
fetal heart rate.
QUESTION: What potential bioeffect occurs through absorption of sound energy by tissue?
A. Cavitation
1
,Page 2 of 128
B. Heating
C. Attenuation
D. Reflection
E. Refraction - ANSWER-B. Heating
QUESTION: When practicing universal precautions you should do all of the following EXCEPT:
A: Wear gloves when there is a potential for contact with patient bodily fluids.
B: Change gloves when moving from one patient to another.
C: Wash hands immediately after gloves are removed.
D: Wear face masks or eye protection whenever there is a possibility of blood splashing into
your face.
E: Wash gloves between exams for re-use from one patient to another. - ANSWER-E: Wash
gloves between exams for re-use from one patient to another.
QUESTION: A nosocomial infection is defined as one that:
A. Is resistant to antibiotics
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,Page 3 of 128
B. Is restricted to the respiratory system
C. Is hospital-acquired
D. Is not contagious
E. Requires patient isolation - ANSWER-C. Is hospital-acquired
QUESTION: Thermally induced biological effects should be preventable by avoiding a local
tissue temperature increase exceeding:
A: 1 degree C
B: 4 degrees C
C: 10 degrees C
D: 95 degrees F
E: None; thermal effects have no threshold. - ANSWER-A: 1 degree C
Q; Where is the point of maximum intensity in a sound beam?
A: Curie point
B: Fresnel zone
C: Focal point
3
, Page 4 of 128
D: Fraunhofer zone
E: F number - ANSWER-C: Focal point
QUESTION: What action below would be most in keeping with the ALARA principle while
performing a diagnostic ultrasound examination?
A. Allow multiple students to scan an obstetrical patient because the fetus is in a good position
for imaging.
B. Prolong the sonogram 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.
D. Maximize the acoustic output to brighten the overall image.
E. Extend the sonogram beyond the intended scope of the exam requisition. - ANSWER-C.
Complete the diagnostic scan in a timely fashion at the lowest output power that achieves a
quality image.
QUESTION: During performance of an obstetrical ultrasound exam you adjust the system
parameters to improve the image. Which of the following parameters would increase acoustic
exposure?
4
