Fig. 2

T1WI and T2WI MRI scans of diseased and healthy subjects. a. Acute stage: Sagittal MR images revealed a longitudinal lesion at the posterior junction region of the pons and medulla oblongata, with prolonged T1 (a, white arrow) and prolonged T2 (b, black arrow) signal. b Convalescence stage: MR images showed there was a longitudinal malacia cavity at the posterior junction region of the pons and medulla, with prolonged T1 (a, white arrow) and prolonged T1 (b, black arrow) signal. c) Healthy controls: plain MRI scan show there is no abnormality