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Spi chapter 1 QUESTIONS AND ANSWERS 100% CORRECT | UPDATED
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Spi chapter 1 QUESTIONS AND ANSWERS 100%CORRECT | UPDATED 2024-2025
It is described as the ability of an object to resist compression and relates to the
hardness of a midium? - ANSWER Stiffness
An increase in pulse repetition frequency would lead to - ANSWER An increase
in duty factor
Which one has the highest propagation speed? - ANSWER Bone
Which one has the lowest propagation speed? - ANSWER Lung tissue
As imaging depth increase, the pulse repetition frequency
Must - ANSWER Decrease
Which of the following describes the amount of refraction that occurs at an
interface? - ANSWER Snell's law
Pressure is typically expressed in - ANSWER Pascals
The typical range of frequency for diagnostic ultrasound imaging is - ANSWER 1
to 20 MHz
The attenuation coefficient in soft tissue is equal to - ANSWER One half of the
operating frequency
, Micro denotes - ANSWER Millionth
Which of the following is described as the distance over which one cycle occurs? -
ANSWER Wavelength
All of the following are true of stiffness except - ANSWER Stiffness and
propagation speed are indirectly associated
Areas of high pressure and density are referred to as - ANSWER Compressions
Spatial pulse length can be calculated by - ANSWER Multiplying the number of
cycles times the wavelength
Density is typically measured in - ANSWER Kilograms per centimeter cubed
As a sound wave travels through the human body the intensity of the sound wave
decreases as a result of - ANSWER All of the above
What is the total amount of the attenuation that occurs if a 6.0-MHz sound beam
travels through 4cm of soft tissue? - ANSWER 12dB
As imaging depth increases pulse repetition period - ANSWER Increases
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