Mhz Unit

Posted in Exercise and Health on 05/19/2010 02:50 pm by admin

Mhz Unit
What is the frequency shift of the ultrasound reflected from blood moving in an artery at a speed 0.15 m/s?

A Doppler blood flow unit emits ultrasound at 7.4 MHz. What is the frequency shift of the ultrasound reflected from blood moving in an artery at a speed 0.15 m/s?

Could someone please help me with this question, I cant seem to get it. I am usin Fo=(f/2)(v/vcell) as shown in the book but I cant get seem to get the answer.

You also need to know the velocity of sound in the tissue/blood ... without that I don't believe it's solvable.

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