Department of Radiology, Jinhua Hospital of Zhejiang University (Jinhua Municipal Central Hospital), Jinhua, China.
Neurocase. 2023 Dec;29(6):186-190. doi: 10.1080/13554794.2024.2348762. Epub 2024 May 3.
Isolated fornix anterior column infarction has rarely been described and is difficult to assess accurately using conventional magnetic resonance imaging (MRI). We report the case of a 75-year-old female who experienced acute anterograde amnesia. MRI performed within 24 h after amnesia onset showed an isolated infarction of the bilateral anterior columns of the fornix on diffusion-weighted imaging (DWI). Her symptoms persisted for up to 50 days, and diffusion tensor imaging (DTI) showed disruption of the fiber tracts of the fornix. when acute amnesia syndrome onset, fornix anterior column infarction should be considered, and optimized DWI and DTI methods are needed to study the fornix in vivo in future research.
孤立性穹窿前柱梗死鲜有报道，且使用常规磁共振成像（MRI）难以准确评估。我们报告了一例 75 岁女性患者，其出现急性顺行性遗忘症。遗忘症发病后 24 小时内行 MRI 检查，显示双侧穹窿前柱在弥散加权成像（DWI）上存在孤立性梗死。患者的症状持续了长达 50 天，弥散张量成像（DTI）显示穹窿纤维束中断。当急性遗忘综合征发作时，应考虑到穹窿前柱梗死，未来的研究需要优化 DWI 和 DTI 方法来研究活体穹窿。
