Magnetic resonance imaging findings. T₂-weighted image short-tau inversion recovery black blood demonstrated myocardial oedema improvement over the 145-day course. Native T₁ value was slightly elevated on Day 53 and improved to normal range in 145 days. A small amount of late gadolinium enhancement and increased extracellular volume area were observed in the left ventricle inferoseptally (red arrowhead). The range of normal native T₁ values of the magnetic resonance imaging scanner was 1237.8 ± 62.2. LGE, late gadolinium enhancement; T₂-WI STIR BB, T₂-weighted short-tau inversion recovery black blood.