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Davies SPI REVIEW questions with precise detailed solutions

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Davies SPI REVIEW questions with precise detailed solutions

Instelling
Davies Ultrasound Physics
Vak
Davies Ultrasound Physics

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2



Davies SPI REVIEW questions with precise detailed solutions
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What action below would be most in keeping with the ALARA principle while performing a
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diagnostic ultrasound examination?
|| || ||




A: Allow multiple students to scan an obstetrical patient because the fetus is in a good
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position for imaging. || || ||




B: Prolong the sonogram to make videos of the fetus for each family member.
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C: Complete the diagnostic scan in a timely fashion at the lowest output power that
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achieves a quality image. || || || ||




D: Maximize the acoustic output to brighten the overall image.
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E: Extend the sonogram beyond the intended scope of the exam requisition. - ✔✔C:
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Complete the diagnostic scan in a timely fashion at the lowest output power that achieves a
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quality image. ||




What does the ALARA principle stand for? - ✔✔As Low As Reasonable Achievable
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During performance of an obstetrical ultrasound exam you adjust the system parameters to
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improve the image. Which of the following parameters would increase acoustic exposure?
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A: Increase gain
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B: Increase TGC
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C: Increase frequency
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D: Increase transmit power
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E: Increase frame averaging - ✔✔D: Increase transmit power
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While performing a sonogram to minimize risk to the fetus which imaging mode trade off
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would be most applicable?
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A: Use M-mode instead of pulsed-wave Doppler to measure the fetal heart rate.
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,2


B: Use color Doppler instead of power Doppler to image the umbilical cord.
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C: Use pulsed-wave Doppler instead of power Doppler to evaluate the fetal heart.
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D: Use harmonics instead of fundamental to image the fetal spine.
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E: All of the above. - ✔✔A: Use M-mode instead of pulsed-wave Doppler to measure the
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fetal heart rate.|| ||




Gain, TGC, and frame averaging do not affect _______ and therefore do not affect _______.
|| || || || || || || || || || || || || || ||




- ✔✔-Sound transmission
|| || ||




-Exposure



T or F: Increasing frequency does not increase exposure. - ✔✔True
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What potential bioeffect occurs through absorption of sound energy by tissue?
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A: Cavitation
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B: Heating|| ||




C: Attenuation
|| ||




D: Reflection
|| ||




E: Refraction - ✔✔B: Heating
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When practicing universal precautions you should do all of the following EXCEPT:
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A: Wear gloves when there is a potential for contact with patient bodily fluids.
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B: Change gloves when moving from one patient to another.
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C: Wash hands immediately after gloves are removed.
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D: Wear face masks or eye protection whenever there is a possibility of blood splashing into
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your face. || ||




E: Wash gloves between exams for re-use from one patient to another. - ✔✔E: Wash gloves
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between exams for RE-use from one patient to another.
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,2




A nosocomial infection is defined as one that is:
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A: Resistant to antibiotics
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B: Restricted to the respiratory system
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C: Hospital-acquired
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D: Not contagious
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E: Requires isolation - ✔✔C: Hospital-acquired
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Thermally induced biological effects should be preventable by avoiding a local tissue
|| || || || || || || || || || || ||




temperature increase exceeding: || || ||




A: 1 degree C
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B: 4 degrees C
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C: 10 degrees C
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D: 95 degrees F
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E: None; thermal effects have no threshold. - ✔✔A: 1 degree C
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Which intensity descriptor has the lowest numerical value for the characterization of a
|| || || || || || || || || || || || ||




pulsed-wave ultrasonic field? || ||




A: SATA|| ||




B: SPTA
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C: SATP
|| ||




D: SPTP|| ||




E: These intensity descriptors are only used for continuous-wave ultrasound. - ✔✔A: SATA
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Increased tissue heating could occur when you:
|| || || || || || ||




A: Decrease frequency.
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, 2


B: Increase transmit power.
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C: Decrease exposure time.
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D: Decrease pulse repetition frequency.
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E: All of the above - ✔✔B: Increase transmit power.
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A study designed to determine if there is an association between an adverse effect in a
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population and exposure to a particular agent is a(n): || || || || || || || || ||




A: Case report
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B: Epidemiological study
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C: In vitro study
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D: In vivo study
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E: Single-incident investigation - ✔✔B: Epidemiological study
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Which of the following actions is NOT compliant with HIPAA?
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A: Cropping all patient identifiers from images used for teaching purposes.
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B: Refraining from disclosing patient health information without proper authorization.
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C: Reviewing your neighbors medical studies on your hospital PACS system so you can give
|| || || || || || || || || || || || || || ||




her your opinion of her condition.
|| || || || || ||




D: Covering your daily requisition list so that the names are not visible to patients and
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visitors. ||




E: All of these actions are compliant with HIPAA. - ✔✔C: Reviewing your neighbors
|| || || || || || || || || || || || || ||




medical studies on your hospital PACS system so you can give her your opinion of her
|| || || || || || || || || || || || || || || ||




condition.



What does HIPAA stand for? - ✔✔The Health Insurance Portability and Accountability Act
|| || || || || || || || || || || ||




What does mechanical index indicate on an ultrasound system?
|| || || || || || || ||

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