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A pulsed Doppler scan is acquired with a central frequency of 9 MHz with an angle...

A pulsed Doppler scan is acquired with a central frequency of 9 MHz with an angle of 44 degrees. The measured blood velocity is 8 cm/s. Calculate the Doppler frequency shift in Hz. Assume the velocity of sound in tissue is 1540 m/s.

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Answer #1

Hello,

Given:

The central frequency of a pulse is

The velocity of blood flow is

The angle of incidence between the cental frequency and the direction of flow is

The velocity of sound in tissue is

The expression of the Doppler frequency shift fd for blood flow velocity is

Substituting the given values in this equation as

The Doppler frequency shift is 673 Hz.

Thanking You!

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