Keywords: Myocardium, Quantitative ImagingMyocardial involvement is frequently observed in rheumatologic diseases but typically remains subclinical. This study aimed to detect early subclinical cardiac involvement and to investigate characteristics of myocardial involvement by cardiac MR (CMR) imaging. In 75 of 83 patients with rheumatologic diseases, elevated global native T1 and ECV values were observed. Furthermore, 51 patients showed positive segment distribution of late gadolinium enhancement, including subendocardial contrast, intramural contrast and transmural contrast. Thus, T1-mapping, ECV and late gadolinium enhancement could detect early myocardial involvement in rheumatologic diseases patients without overt LV dysfunction.
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