Podcast
Questions and Answers
What is the result of the ultrasound wave losing energy as it travels through a medium?
What is the result of the ultrasound wave losing energy as it travels through a medium?
- Diffraction
- Interference
- Refraction
- Attenuation (correct)
What is the main reason for refraction of ultrasound waves?
What is the main reason for refraction of ultrasound waves?
- Change in acoustic impedance at the interface (correct)
- Change in propagation velocity
- Change in medium density
- Change in ultrasound wave frequency
What is the formula to calculate acoustic impedance (Z)?
What is the formula to calculate acoustic impedance (Z)?
- Z = v / r
- Z = r - v
- Z = r * v (correct)
- Z = r / v
What is the purpose of moving the ultrasound head in a circular path during therapy?
What is the purpose of moving the ultrasound head in a circular path during therapy?
What is the term for the amount of energy absorbed by the medium as the ultrasound wave travels through it?
What is the term for the amount of energy absorbed by the medium as the ultrasound wave travels through it?
What is the effect of constructive interference on the ultrasound wave?
What is the effect of constructive interference on the ultrasound wave?
What is the purpose of using an acoustic lens in ultrasound imaging?
What is the purpose of using an acoustic lens in ultrasound imaging?
What is the result of standing waves in ultrasound applications?
What is the result of standing waves in ultrasound applications?
What is the component of the ultrasound machine that produces the ultrasound wave?
What is the component of the ultrasound machine that produces the ultrasound wave?
What is the effect of acoustic impedance mismatch on the ultrasound wave?
What is the effect of acoustic impedance mismatch on the ultrasound wave?
Flashcards
Attenuation
Attenuation
The decrease in intensity of an ultrasound wave as it passes through a medium due to absorption and scattering.
Refraction
Refraction
The bending of the ultrasound wave as it passes from one medium to another with a different acoustic impedance.
Acoustic Impedance (Z)
Acoustic Impedance (Z)
The measure of a material's resistance to the passage of sound waves, calculated by multiplying density (r) by the speed of sound (v) in the material.
Circular Movement
Circular Movement
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Constructive Interference
Constructive Interference
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Acoustic Lens
Acoustic Lens
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Standing Waves
Standing Waves
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Transducer
Transducer
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Acoustic Impedance Mismatch
Acoustic Impedance Mismatch
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Ultrasound Imaging
Ultrasound Imaging
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