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. 2017 Mar 22;7:44909. doi: 10.1038/srep44909

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Copyright © 2017, The Author(s)

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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Color-coded OCT attenuation maps calculated for a silica phantom S using (A to C) the EF method, (D to F) the FD method, (G to I) the LF method. The colormaps were obtained by using a data length of (A,D,G) ∼350 μm and (B,C,E,F,H,I) ∼700 μm in the z direction, respectively; each RGB pixel represents the attenuation coefficient with ∼330 A-lines averaged laterally, and a step size of ∼13 A-lines. (C,F,I) The corresponding volumetric OCT image with an overlaid attenuation en face colormap. Color bar (units in mm⁻¹): green represents high attenuation and red represents low attenuation.