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. 2019 Dec 23;9:19618. doi: 10.1038/s41598-019-56097-4

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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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Myocardial perfusion distributions in clinical patients. (a) Polar maps created from 37 female patients with a low likelihood of CAD. The 17-segment polar maps were shown in the right panel. (b) Polar maps created from 35 male patients with a low likelihood of CAD. The 17-segment polar maps were also shown in the right panel. (c) Stress myocardial count distributions derived from FBP and OSEM_RR in male (right) and female (left) patients. (d) Relative count ratios of anterolateral segments to anteroseptal segments (left), inferior segments (middle), and anterior segments (right) in stress condition. (e) Rest myocardial count distributions derived from FBP and OSEM_RR in male (right) and female (left) patients. (f) Relative count ratios of anterolateral segments to anteroseptal segments (left), inferior segments (middle), and anterior segments (right) in rest condition. Error bars are SD of the mean. (**P < 0.01, ***P < 0.001, and ****P < 0.0001. Paired student’s t test). A, anterior; AS, anteroseptal; S, septal; IS, interoseptal; I, inferior; IL, inferolateral; L, lateral; and AL, anterolateral.