Echoes created in ultrasonography are the result of
A) differences in acoustic impedances at tissue interfaces.
B) similar tissues having the same acoustic impedance.
C) tissue interfaces running at angles parallel to the primary beam path.
D) photoelectric and Compton scattering interactions.
Correct Answer:
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Q22: A transducer that lacks a damping material
Q23: The relationship between ultrasound beam intensity
A)and power
Q24: The ultrasound transducer has the ability to
Q25: In order to produce the best possible
Q26: All of the following are related EXCEPT
A)convex
Q28: Doppler scanning relies on the principle of
A)directional
Q29: The process of sound losing energy as
Q30: Three-dimensional ultrasound imaging in real time is
Q31: Sound waves are unlike electromagnetic waves in
Q32: Harmonic sound waves
A)are the result of scattered
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