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RPVI Exam Vascular Physics Case Review.pdf - VascularWeb

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Determining Flow Direction<br />

Like spectral Doppler, the color direction is easily determined by<br />

analyzing the angle formed between the steered beam and the flow<br />

direction.<br />

+ V, + f Dop<br />

Angle less<br />

than 90º<br />

Flow Direction<br />

- V, - f Dop<br />

Steer<br />

Direction<br />

Direction chosen correctly<br />

Direction chosen<br />

incorrectly<br />

* The angle to flow is always measured between the steered beam<br />

direction and the head of the flow (where the flow is going to)

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