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. 2015 Jul 24;32:35–48. doi: 10.1007/s10554-015-0713-z

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© The Author(s) 2015

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. 4 — Visual based grading of intraplaque neovascularization on CEUS imaging. a No enhancement: Small plaque on the fare wall of the internal carotid artery on B-mode ultrasound (right side) without intraplaque neovascularization on CEUS imaging (left side). b Moderate enhancement: Mixed hypo- and hyperechoic plaques at the carotid bulb on B-mode ultrasound (right side) and CEUS imaging (left side) with moderate intraplaque neovascularization on the plaque shoulder (arrows). c Extensive enhancement: Hypoechoic plaque at the origin of the internal carotid artery on B-mode ultrasound (right side) and CEUS imaging (left side) with extensive intraplaque neovascularization including the plaque core (arrows)