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SPI Practice Test 1

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1. What is the term used to describe the effects of soft tissue on ultrasound?

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2. When employing a vibrating string or fluid pump for system performance testing, which specific parameter is being evaluated?

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3. In the context of continuous wave (CW) ultrasound, what is the duty factor (DF)?

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4. In the context of an unfocused ultrasound beam, as per the American Institute of Ultrasound in Medicine's "Statement on Mammalian Biological Effects of Ultrasound In Vivo," no observed bioeffects occur when the Spatial Pulse Temporal Average (SPTA) intensity is less than what value?

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5. In utilizing a tissue-equivalent phantom to verify ultrasound machine efficiency, identify the resolution that is NOT assessed with this phantom.

 

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6. How would you characterize sound waves?

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7. What type of artifact appears echogenic and results from gas bubbles vibrating due to their interaction with the ultrasound beam?

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8. All of the following are true EXCEPT

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9. Among different types of cavitation, which one is the MOST concerning cause of bioeffects?

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10. Among the following choices, which statement is NOT true regarding the filling defect within the gallbladder?

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11. To address the concern of work-related musculoskeletal disorders, what is the recommended best practice for sonographers during scanning regarding the maximum degree of arm abduction that should be avoided?

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12.  Among the options, which one is not considered an acoustic variable?

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13. If a sonographer observes that the mechanical index (MI) is excessively high during an ultrasound, what would be the MOST appropriate modification for the sonographer to make?

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14.  What is the frequency closest to the lower limit of ultrasound?

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15. What is the fundamental cause behind the reduction in power and intensity of the ultrasound beam as it traverses through tissue?

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16. What is the approximate speed of ultrasound in soft tissue?

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17. Choose the technique that will result in the LEAST exposure to the patient.

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18. The phased array transducer is often chosen for POCUS exam for these reasons, EXCEPT:

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19. ______ is the time to complete one cycle.

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20. Choose the modification that a sonographer can implement to decrease the amount of attenuation as the ultrasound beam travels through tissues.

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21. Among the following components, which one does NOT influence impedance?

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22. What term describes the performance check that assesses the ultrasound machine's ability to accurately visualize signals that are weaker than others?

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23. What condition must be present for reflection to occur?

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24. Put in decreasing order.

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25. When considering ultrasound exams and the ALARA principle (As Low As Reasonably Achievable), what specific action exemplifies the best practice for maintaining optimal image quality while minimizing radiation exposure?

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26. Identify the ultrasound system function that empowers the sonographer to adjust for the amount of attenuation occurring with increasing depth.

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27. What is the name of the recent technological advancement employed on tissues like the liver, breast, prostate, and thyroid to evaluate tissue stiffness or enhance lesion assessment?

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28. Given a sound beam traveling in soft tissue with a frequency of 12 MHz, calculate the attenuation coefficient.

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29. What is true regarding color flow doppler (CFD)?

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30. Among the following options, which is NOT a component of attenuation?