CMR parameters based on severity of COVID-19 illness:
A significant proportion of severe COVID-19 patients had abnormalities
on CMR as compared to mild and moderate cases. In terms of the
conventional CMR parameters, there was a significant difference in only
LVEF, LVEDV among the three groups based on severity of COVID-19 illness
(Supplementary table 1). Myocardial native T1 values of severe COVID-19
patients were significantly higher as compared to mild and moderate
COVID-19 patients (mild: 1253.9+ 35.6 ms vs moderate:
1283.2+ 37.6 ms vs severe: 1309.9+ 38.1 ms; P=0.007).
Similarly, myocardial native T2 values of severe COVID-19 patients were
also significantly higher as compared to mild and moderate COVID-19
patients (mild: 44.1+ 1.5 ms vs moderate: 48.5+ 6.1 ms vs
severe: 57.4+ 23.8 ms; P=0.002).