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. 2021 Dec 3;10:241. doi: 10.1038/s41377-021-00682-8

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© The Author(s) 2021

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. 6 — a Images of subcutaneous blood vessels in the middle finger. a1 photograph of human hand. Red rectangular box indicates the ROI. a2–a3 Conventional LSCI (a2) and TR-LSCI (a3) for blood flow mapping using 785-nm laser. a4, a5 Conventional LSCI (a4) and TR-LSCI (a5) for blood flow mapping using 850-nm laser. a6 Line plots of dashed lines in (a3) and (a5). b Images of subcutaneous vessels in the opisthenar. b1 photograph of the ROI indicated by the red rectangular box. b2, b3 Conventional LSCI (b2) and TR-LSCI (b3) for blood flow mapping using 785-nm laser. b4, b5 Conventional LSCI (b4) and TR-LSCI (b5) for blood flow mapping using 850-nm laser. b6 Line plots of dashed lines in (b3) and (b5)