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. 2016 Mar 15;5:328. doi: 10.1186/s40064-016-1977-z

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© Park et al. 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 5 — Scatter plot with line fit of flow velocity and angle shows a significant linear correlation (P = 0.000, R² = 0.491) between beam-flow angle and PSV, with PSV overestimation progressively increased as beam-flow angles increased even with Doppler angle correction