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SPI PRACTICE QUESTIONS EXAM 1 WITH CORRECT ANSWERS 100% VERIFIED | UPDATED
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SPI PRACTICE QUESTIONS EXAM 1 WITH CORRECT ANSWERS 100% VERIFIED | UPDATED
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SPI PRACTICE QUESTIONS EXAM 1 WITH CORRECTANSWERS 100% VERIFIED | UPDATED 2024-2025
What best describes a sound wave? - ANSWER A mechanical longitudinal wave
What MUST be different on the two sides of an interface for refraction to occur? -
ANSWER Propagation speed of sound and oblique incidence
The characteristic acoustic impedance of a medium equals the product of -
ANSWER density and speed of sound
Ultrasonic attenuation is considered to consist of two parts scattering and
absorption. Absorption is - ANSWER local conversion of ultrasound energy to
heat
Which of the following has the greatest effect on the focal length of a single
element transducer? - ANSWER Doubling the element diameter
Spatial pulse length is the product of the number of cycles in the pulse and the -
ANSWER wavelength
Manipulating the output power control of an ultrasound instrument does NOT
affect the - ANSWER pulse repetition frequency
What will be affected by the power? - ANSWER echo amplitude
beam intensity
acoustic exposure to the patient
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