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. 2020 Nov 24;11:5967. doi: 10.1038/s41467-020-19591-2

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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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Fig. 4 — a Spherical plastic beads of 5, 5, and 7 mm in a gelatin tissue phantom spaced 5, 5, and 7 mm apart at a depth of 30 mm. b Recorded scan of the beads with the transducer and lens in a bistatic arrangement overlayed with the known position of the beads in the tissue-approximating phantom. c Biomasses of celery, carrot, Yaupon berry, and apple seed to simulated masses in tissue. d Scan of biomasses overlayed with known position of masses at frequency of collimation.