In spectral Doppler, the Y-axis represents what parameter?

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Prepare for the Vascular Techniques Exam 3. Study with in-depth questions, hints, and explanations to fully understand vascular techniques. Bolster your knowledge and ensure success on your exam!

Multiple Choice

In spectral Doppler, the Y-axis represents what parameter?

Explanation:
In spectral Doppler, you’re looking at how fast blood moves over time. The vertical axis represents velocity (how fast), usually given in cm/s, while the horizontal axis represents time. The spectral trace shows the range of velocities present in the sampled vessel as time progresses. The direction of flow is indicated by where the velocities lie relative to the baseline: motion toward the transducer appears on one side of the baseline, motion away appears on the other. The axis itself measures velocity, not time, direction, or amplitude.

In spectral Doppler, you’re looking at how fast blood moves over time. The vertical axis represents velocity (how fast), usually given in cm/s, while the horizontal axis represents time. The spectral trace shows the range of velocities present in the sampled vessel as time progresses. The direction of flow is indicated by where the velocities lie relative to the baseline: motion toward the transducer appears on one side of the baseline, motion away appears on the other. The axis itself measures velocity, not time, direction, or amplitude.

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