a. Conventional Dopplers admit an ultrasonic beam in the frequency of 2–10 MHz
b. The sound frequency changes in inverse proportion to the velocity of the moving particles (red blood cells) and the cosign of the angle of insonnation
c. The frequency shift is not audible
d. More information can be obtained by spectral analysis
b. The sound frequency changes in inverse proportion to the velocity of the moving particles (red blood cells) and the cosign of the angle of insonnation
c. The frequency shift is not audible
d. More information can be obtained by spectral analysis
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