Which of the following is/are true regarding Doppler assessment?
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
Answer:A
Which of the following is/are true regarding Doppler assessment?
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