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Anterior Thalamic Deep Brain Stimulation Therapy Based on Functional Anatomy Tomotaka ISHIZAKI 1,2,3 , Satoshi MAESAWA 4 , Ryuta SAITO 1,2,3 1Department of Neurosurgery, Nagoya University Graduate School of Medicine 2Epilepsy Center, Nagoya University Hospital 3Brain and Mind Research Center, Nagoya University 4Department of Neurosurgery, Nagoya Medical Center Keyword: 前腹側核 , 乳頭視床路 , 大脳辺縁系 , 経脳室アプローチ , 脳室外アプローチ , anteroventral nucleus , mammillothalamic tract , limbic system , transventricular approach , extraventricular approach pp.1225-1238
Published Date 2025/11/10
DOI https://doi.org/10.11477/mf.030126030530061225
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 Deep brain stimulation (DBS) targets the anterior nucleus of the thalamus (ANT), and has emerged as a promising treatment for drug-resistant epilepsy. ANT-DBS is thought to exert its antiepileptic effect by activating inhibitory interneurons in the cingulate gyrus, thereby modulating epileptic activity through the Papez circuit and default mode network, both major components of the limbic system. Among the ANT subnuclei, the anteroventral nucleus (AV) is considered the most promising stimulation site because of its extensive connectivity with the limbic system. However, direct visualization of the AV nucleus using MRI is challenging. In contrast, the ANT-mammillothalamic tract (MTT) junction is clearly identifiable on imaging, and serves as a practical landmark for targeting. There are two major surgical approaches for ANT-DBS: transventricular and extraventricular. Thus, the transventricular approach may offer superior electrode placement accuracy. As increasing evidence indicates that seizure outcomes are more closely related to the precise stimulation site than to stimulation parameters, image-guided targeting based on the ANT-MTT junction is considered critically important for optimizing clinical outcomes.


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電子版ISSN 1882-1251 印刷版ISSN 0301-2603 医学書院

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