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. 2020 Jan 15;10:403. doi: 10.1038/s41598-019-57317-7

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as 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. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Overview of generated SWE images. From left to right: Ultrasound B-mode images, SWE acquisition, ultrafast motion images obtained from data autocorrelation (four snapshot motion images displayed, from upper left to lower right), axial velocity map (space-time domain) with TTP-estimated group velocity (red slope), and Fourier-generated dispersion behavior and phase velocity map (velocity-frequency domain). Examples are given in longitudinal and transverse view for one AHA type VI, and one AHA type V plaque, respectively. Note that for the dispersion curves, data was discarded in frequency-ranges where corruption from noise or higher-order modes seemed visually apparent (in this case, lower frequency-range data for the AHA type V plaque in the longitudinal view plan was discarded from further analysis, as was higher frequency-range data for the AHA type VI plaque in transverse view). For all other presented cases, the 200–500 Hz range was deemed appropriate for inclusion. All examples are shown over a frequency range of 0–750 Hz.