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SPI MOCK EXAM QUESTIONS & ANSWERS SCORED A+

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What is the best estimate of the distance that sound can travel in soft tissue in one second? - 1 yard - 100 yards - 1 mile - 10 miles - ️️1 mile Which of the following is NOT one of the physical processes that contributes to attenuation of US waves passing through soft tissue? - reflec...

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  • October 29, 2024
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  • 2024/2025
  • Exam (elaborations)
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SPI MOCK EXAM
What is the best estimate of the distance that sound can travel in soft tissue in one
second?

- 1 yard
- 100 yards
- 1 mile
- 10 miles - ✔️✔️1 mile


Which of the following is NOT one of the physical processes that contributes to
attenuation of US waves passing through soft tissue?

- reflection
- redirection of sound in many directions
- focusing
- conversion of acoustic energy to heat - ✔️✔️focusing


What term describes the # of cycles that an acoustic variable completes in a second?

- period
- freq.
- PRP
- variable rate - ✔️✔️freq.

What happens to venous flow return to the HEART when a person INHALES? -
✔️✔️increases

What establishes the freq. of an US wave?

- transducer
- medium through which sound travels
- both
- neither - ✔️✔️transducer

Which of the following tasks is NOT performed by the receiver of an US sx?

- rectification
- smoothing
- compression
- degaussing - ✔️✔️degaussing

, Which of the following is NOT a potential mechanism for the production of bioeffects
from US exposure to the body?

- temp. elevation
- fractionation
- cavitation
- vibration - ✔️✔️fractionation

When the ELASTICITY of a medium is HIGH, the _____ is HIGH

- stiffness
- prop. speed
- compressibility
- reflectivity - ✔️✔️compressibility

According to AIUM, at which IN SITU tissue temp. is there danger to a fetus?

- 100 C
- 98.6 F
- 1 F over normal temp.
- 41 C - ✔️✔️41 C

2 sound pulses travel through the SAME medium. One wave's freq. is 2 MHz and the
other 10 MHz.
Which pulse has a LOWER PROP. SPEED?

- 10 MHz pulse
- 2 MHz pulse
- neither
- cannot be determined - ✔️✔️neither

What is the SMALLEST part of a DIGITAL picture called?

- bit
- byte
- pixel
- fractal - ✔️✔️pixel

SPL is _________ related to PD - ✔️✔️directly

AXIAL resolution is determined by

- mult. reflections
- beam width
- attenuation

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