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. 2023 Apr 24;13:33. doi: 10.1186/s13550-023-00987-2

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© The Author(s) 2023

Open AccessThis 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 3 — Comparison of image quality in patients with small heart size. A Representative tomography image of a 59-year-old female with a small heart. The number of iterations was 10, and the number of subsets was 3. B Representative tomography image for which the number of iterations was 18 and the number of subsets was 8. Image A is smoother than image B. The left ventricle is smaller in image A than in image B