An echocardiogram uses 4.4 MHz ultrasound to measure blood flow in the aorta. The blood is...
An echocardiogram uses 4.4 MHz ultrasound to measure blood flow in the aorta. The blood is moving away from the probe at 1.6 m/s .
A. What is the frequency shift of the reflected ultrasound? Use values given in the table if necessary. Enter a positive value if the received frequency is higher than the emitted frequency, and a negative value if the received frequency is lower than the emitted frequency.
Homework Answers
Frequency, F = (v - vblood)/(v + vblood) f
F = (1540 - 1.6)/(1540 + 1.6) x 4.4 x 10^6 = 4.39 x 10^6 Hz
Shift = (4.39 x 10^6) - (4.4 x 10^6) = - 9133.37 Hz
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