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. 2021 Feb 8;23:7. doi: 10.1186/s12968-020-00697-x

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© The Author(s) 2021

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/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 4 — Bland–Altman and scatter plots comparing baseline CTA and CMRA measurements. Bland–Altman plots (a–c) show high agreement between CTA and CMRA for the measurements of aortic anatomic parameters. The means of differences (solid line) shown by the Bland–Altman plots are 0 cm² (area), 1.0 mm (circumference), and 0.6 mm (diameter). Dashed lines show the 95% limits of agreement (± 1.96 standard deviation). Scatter plots (d–f) also show excellent agreement between measurements on CTA and CMRA with ICC values for area, circumference and diameter of 0.97 for each. CTA computed tomography angiography, CMRA cardiovascular magnetic resonance angiography, ICC intra-class correlation coefficient