Davies SPI REVIEW Questions and Answers Already Passed

Davies SPI REVIEW Questions and Answers Already Passed 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. C: Complete the diagnostic scan in a timely fashion at the lowest output power that achieves a quality image. What does the ALARA principle stand for? As Low As Reasonable Achievable 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? A: Increase gain B: Increase TGC C: Increase frequency D: Increase transmit power E: Increase frame averaging D: Increase transmit power While performing a sonogram to minimize risk to the fetus which imaging mode trade off 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. A: Use M-mode instead of pulsed-wave Doppler to measure the 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 What potential bioeffect occurs through absorption of sound energy by tissue? A: Cavitation B: Heating C: Attenuation D: Reflection E: Refraction B: Heating 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. E: Wash gloves between exams for RE-use from one patient to another. A nosocomial infection is defined as one that is: A: Resistant to antibiotics B: Restricted to the respiratory system C: Hospital-acquired D: Not contagious E: Requires isolation C: Hospital-acquired 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. A: 1 degree C Which intensity descriptor has the lowest numerical value for the characterization of a pulsed-wave ultrasonic field? A: SATA B: SPTA C: SATP D: SPTP E: These intensity descriptors are only used for continuous-wave ultrasound. A: SATA Increased tissue heating could occur when you: A: Decrease frequency. B: Increase transmit power. C: Decrease exposure time. D: Decrease pulse repetition frequency. E: All of the above B: Increase transmit power. A study designed to determine if there is an association between an adverse effect in a population and exposure to a particular agent is a(n): A: Case report B: Epidemiological study C: In vitro study D: In vivo study E: Single-incident investigation B: Epidemiological study Which of the following actions is NOT compliant with HIPAA? A: Cropping all patient identifiers from images used for teaching purposes. B: Refraining from disclosing patient health information without proper authorization. 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 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? A: The maximum temperature increase in tissue B: The minimum temperature increase in tissue C: Acoustic power in milliwatts D: The liklihood of cavitation during an ultrasound exam E: Minutes of exposure time before tissue heating is too great D: The liklihood of cavitation during an ultrasound exam. In medicine what do the initials "PHI" indicate? A: Private health indicator B: Personal heart index C: Personal health information D: Private