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. 2021 Oct 29;8:758996. doi: 10.3389/fcvm.2021.758996

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Copyright © 2021 Lim, Kim, Kim, Jeong, Cho, Choi and Lee.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Cardiac magnetic resonance imaging (MRI) findings. (A) T2-weighted short TI inversion recovery MRI at 3T in a short-axis view shows multifocal high signal intensities at the mid anterior and lateral wall (arrow) indicating myocardial edema. (B) Late gadolinium enhancement imaging in a four-chamber view displays multifocal mid wall enhancement (arrow) indicating inflammatory myocardial necrosis. (C) T1 mapping and T2 mapping in a short-axis view show elevated T1 and T2 relaxation times at the mid ventricular level, indicating an acute myocardial injury (regional T1 relaxation time-1,418 ms at the anterolateral wall and 1,461 ms at the septal wall, regional T2 relaxation time-45 ms at the anterolateral wall and 47 ms at the septal wall; institution-specific cutoff values for acute myocarditis- T1 global: ≥1,230 ms and T2 global: ≥36 ms).