Optimization of VIM Targeting in Essential Tremor Surgery
Deep brain stimulation (DBS) for essential tremor is based on the intermedius ventralis nucleus of the thalamus (VIM) stimulation. This structure is however very difficult to target, as it remains invisible on imaging. The current procedure based on awake surgery with clinical and electrophysiological testings has several limitations that lead us to develop a probabilistic model to locate precisely the target. This study aims to show that asleep DBS surgery based on this new targeting method leads to at least the same clinical results than the classical procedure.
• Severe essential tremor despite the optimal medical management
• Age between 18 and 75 years
• Normal MRI scan
• Mattis Dementia Rating Scale (MDRS) score ≥ 130
• Affiliation to the social security
• Signed informed consent