Answer:
The answer is 0º
Explanation:
The options are;
A. 0º
B. 30º
C. 45°
D. 90°
The answer is A- 0º (Zero degree)
Cosine θ is applied as a correction for the angle between the ultrasound beam and the direction of blood flow. Cos θ = 1 if the beam is parallel to the direction of blood flow, which allows the Doppler ultrasound measure maximum and accurate velocity.
