The reasoning
Doppler equation: Δf = 2 f₀ v cos θ / c, where f₀ = transmitted frequency, v = velocity, θ = angle between beam and flow, c = 1540 m/s.
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Part 1 · Imaging Physics and Radiation Safety
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Doppler equation: Δf = 2 f₀ v cos θ / c, where f₀ = transmitted frequency, v = velocity, θ = angle between beam and flow, c = 1540 m/s.
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