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. 2016 Sep 12;33(1):5–11. doi: 10.1007/s10554-016-0968-z

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© The Author(s) 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. 2 — A representative image of the en-face map depicting the attenuation features across the vessel and the 4 mm segment of a plaque that would be used to calculate the IPA. The inset plot shows the IPA for the segment for different thresholds ‘x’ in IPA_x. Color scale runs from 0 to 12 mm⁻¹