Abstract
The Doppler effect describes the frequency shift that occurs when there is relative movement between a wave transmitter and receiver. Doppler-dependent examination techniques (Doppler and duplex sonography) use this frequency shift to assess blood flow parameters. The Doppler frequency shift is directly proportional to blood flow velocity. Other influencing variables are the angle between the sound beam and the vessel and the sound transmission frequency.
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Widder, B., Hamann, G.F. (2022). Basics of Sonographic Flow Detection. In: Widder, B., Hamann, G. (eds) Duplex sonography of the brain-supplying arteries. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-65566-5_4
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DOI: https://doi.org/10.1007/978-3-662-65566-5_4
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