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Updated: Jan 20, 2026

Brain Infarct Segmentation and Registration on MRI or CT for Lesion-symptom Mapping
Published on: September 25, 2019
[A case of recurrent transient global amnesia showing different symptom duration and MRI findings]
Go Hashimoto1, Koji Ishitsuka1, Miyuki Kuwano1
1Department of Neurology, National Hospital Organization Fukuoka-Higashi Medical Center.
Abstract:
A 66-year-old man was admitted to our department with anterograde amnesia. He was diagnosed with transient global amnesia (TGA) because of the symptom lasting for several hours and no abnormal findings on MRI and EEG. About a year after the episode, he recurred amnesia lasting only for 20 minutes. MRI diffusion weighted image (DWI) revealed a small hyperintense signal in the right hippocampus, while there was no abnormality on EEG. We diagnosed him with recurrent TGA. This case may be interesting in that symptom duration and MRI-DWI finding are much different between two attacks of TGA.
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