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. 2021 Aug 25;51(13):2470–2480. doi: 10.1007/s00247-021-05169-7

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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 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. 5 — A clinical example of cardiac magnetic resonance imaging (MRI) in short-axis view in a 16-year-old boy. Cine images (balanced steady state free precession [b-SSFP]) show normal left ventricular ejection fraction (LVEF; 58%, no segmental hypokinesia) and pericardial effusion basal inferior (arrow). No focal or diffuse enhancement was identified on late gadolinium enhancement (LGE). No focal myocardial edema was visible on fat-suppressed (T2-weighted short TI inversion recovery [T2 STIR]) images. Mapping parameters displayed high global myocardial native T1 and T2 relaxation times at baseline cardiac MRI and normalization at follow-up (arrowheads show the most affected segments). The diagnosis of acute diffuse myocarditis in this patient was only possible using quantitative parameters according to 2018 Lake Louise criteria and would have been missed by the original Lake Louise criteria