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. 2019 Feb 27;9:2933. doi: 10.1038/s41598-018-37588-2

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© The Author(s) 2019

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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(a) Experimental setup for straight fiber tip tracking. (b) image showing the ablation fiber used, the ablation fiber has a gold covering at its tip. (c) Fiber tip seen using PA imaging, body of the fiber seen using US imaging. Appearance of the straight fiber in combined US and thresholded PA imaging in (d) transverse, (e) sagittal, and (f) coronal planes. (g) Volumetric image of the fiber in both US and thresholded PA images indicating that PA is only visualizing the fiber tip while US imaging shows the whole fiber body. Supplementary Movie 1 shows the volumetric US and PA of the phantom with straight fiber.