Harmonic sound waves occur when the transmitted frequency is twice the fundamental frequency, resulting in higher frequency waves. This allows the sonographer to use a low frequency transducer for penetration, while still maintaining improved resolution due to the higher frequency harmonic waves.

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Harmonic Sound Waves

Question 32

Multiple Choice

Harmonic sound waves

A) are the result of scattered echoes hitting each other.
B) allow the sonographer to use a low frequency transducer for penetration with improved resolution.
C) do not occur in a water medium.
D) remain as a sinusoidal wave shape but can change shape based upon tissue shape and contour.

Correct Answer: