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Updated: Sep 28, 2026
Diffusion Imaging in the Rat Cervical Spinal Cord
Published on: April 7, 2015
Transient MR signal changes in the splenium of the corpus callosum in rotavirus encephalopathy: value of
Ritsuyo Kobata1, Hirokazu Tsukahara, Akio Nakai
1Department of Pediatrics, Faculty of Medicine, Fukui Medical University, Fukui 910-1193, Japan.
Abstract:
The authors report serial brain MR findings from a 2-year-old girl with rotavirus encephalopathy. The lesion in the splenium of the corpus callosum showed restricted proton diffusion, suggesting local cytotoxic edema. Diffusion-weighted images demonstrated the lesion more conspicuously than other techniques, such as fluid-attenuated inversion-recovery and T1- and T2-weighted images. The findings were reversible on follow-up MRI obtained 4 days later. Diffusion-weighted MRI is a potentially useful method for detecting early changes of rotavirus encephalopathy, although the mechanism of the restricted diffusion is not clearly identified.
Insights
Diffusion-weighted MRI can detect early brain changes in rotavirus encephalopathy. Lesions in the splenium of the corpus callosum showed restricted diffusion, indicating cytotoxic edema, and resolved within days.
Area of Science:
- Neurology
- Pediatric Neurology
- Radiology
Background:
- Rotavirus is a common cause of gastroenteritis in children.
- Rotavirus encephalopathy is a rare but serious neurological complication.
- Early detection of brain involvement is crucial for management.
Observation:
- Serial brain MRI was performed on a 2-year-old girl diagnosed with rotavirus encephalopathy.
- A specific lesion was identified in the splenium of the corpus callosum.
- The lesion exhibited restricted proton diffusion on MRI.
Findings:
- Diffusion-weighted imaging (DWI) highlighted the splenium lesion more clearly than other MRI sequences (FLAIR, T1, T2).
- Restricted diffusion suggests local cytotoxic edema as the underlying pathology.
- Follow-up MRI 4 days later showed complete resolution of the lesion.
Implications:
- DWI may be a valuable tool for the early detection of rotavirus encephalopathy.
- The reversible nature of the observed changes is noteworthy.
- Further research is needed to elucidate the exact mechanism of restricted diffusion in this condition.
