In spectral Doppler, hepatopedal portal flow is represented as which position relative to baseline?

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In spectral Doppler, velocity is shown relative to a baseline of zero. Positive velocities (toward the transducer) are displayed above the baseline, while negative velocities (away from the transducer) appear below it. Hepatopedal flow means the portal blood is moving toward the liver. With the typical abdominal probe orientation, this toward-the-liver direction is recorded as positive velocity, so it shows up above the baseline. If the flow were moving away from the liver (hepatofugal), it would appear below the baseline.