PMID- 34335232 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210803 IS - 1663-4365 (Print) IS - 1663-4365 (Electronic) IS - 1663-4365 (Linking) VI - 13 DP - 2021 TI - Focused Ultrasound Thalamotomy for the Treatment of Essential Tremor: A 2-Year Outcome Study of Chinese People. PG - 697029 LID - 10.3389/fnagi.2021.697029 [doi] LID - 697029 AB - Background: Essential tremor (ET) is a common movement disorder among elderly individuals worldwide and is occasionally associated with a high risk for mild cognitive impairment and dementia. This retrospective study aimed to determine the clinical outcome of unilateral magnetic resonance-guided focused ultrasound (MRgFUS) thalamotomy in Chinese patients with ET. Methods: In total, 31 male and 17 female patients with drug-refractory ET were enrolled in this research study from January 2017 to September 2019. The severity of tremor and disability were assessed using the Clinical Rating Scale for Tremor (CRST) within a 2-year follow-up period. Results: The mean age of the participants was 59.14 +/- 13.5 years. The mean skull density ratio (SDR) was 0.5 +/- 0.1. The mean highest temperature was 57.0 +/- 2.4 degrees C. The mean number of sonications was 10.0 +/- 2.6. The average maximum energy was 19,710.5 +/- 8,624.9 J. The total CRST scores and sub-scores after MRgFUS thalamotomy significantly reduced during each follow-up (p < 0.001). All but four (8.3%) of the patients had reversible adverse events (AEs) after the procedure. Conclusions: MRgFUS had sustained clinical efficacy 2 years after treatment for intractable ET. Only few patients presented with thalamotomy-related AEs including numbness, weakness, and ataxia for an extended period. Most Chinese patients were treated safely and effectively despite their low SDR. CI - Copyright (c) 2021 Wu, Lin, Li, Lai, Lee, Tsai, Chiu, Chang, Wei and Taira. FAU - Wu, Peihan AU - Wu P AD - Department of Neurology, Chang Bing Show Chwan Memorial Hospital, Changhua County, Taiwan. FAU - Lin, Wei AU - Lin W AD - Department of Neurology, Chang Bing Show Chwan Memorial Hospital, Changhua County, Taiwan. FAU - Li, Kun Hong AU - Li KH AD - MR-Guided Focused Ultrasound Center, Chang Bing Show Chwan Memorial Hospital, Changhua County, Taiwan. FAU - Lai, Hui-Chin AU - Lai HC AD - MR-Guided Focused Ultrasound Center, Chang Bing Show Chwan Memorial Hospital, Changhua County, Taiwan. FAU - Lee, Ming-Tsung AU - Lee MT AD - Research Assistant Center, Show Chwan Memorial Hospital, Changhua, Taiwan. AD - Department of Nursing, Hungkuang University, Taichung, Taiwan. FAU - Tsai, Kevin Wen-Kai AU - Tsai KW AD - InSightec Ltd., Tirat Carmel, Israel. FAU - Chiu, Pai-Yi AU - Chiu PY AD - Department of Neurology, Show Chwan Memorial Hospital, Changhua, Taiwan. FAU - Chang, Wei-Chieh AU - Chang WC AD - Department of Neurosurgery, Chang Bing Show Chwan Memorial Hospital, Changhua County, Taiwan. FAU - Wei, Cheng-Yu AU - Wei CY AD - Department of Neurology, Chang Bing Show Chwan Memorial Hospital, Changhua County, Taiwan. AD - Department of Exercise and Health Promotion, College of Kinesiology and Health, Chinese Culture University, Taipei, Taiwan. FAU - Taira, Takaomi AU - Taira T AD - Department of Neurosurgery, Tokyo Women's Medical University, Tokyo, Japan. LA - eng PT - Journal Article DEP - 20210714 PL - Switzerland TA - Front Aging Neurosci JT - Frontiers in aging neuroscience JID - 101525824 PMC - PMC8317688 OTO - NOTNLM OT - MR-guided focused ultrasound OT - essential tremor OT - focused ultrasound OT - functional neurosurgery OT - thalamotomy COIS- KW-KT was employed by company Insightec Ltd. The authors declare that part of this study received funding from Insightec Ltd. under the ET002J protocol. The funder had involvement with the preparation of the manuscript. EDAT- 2021/08/03 06:00 MHDA- 2021/08/03 06:01 PMCR- 2021/01/01 CRDT- 2021/08/02 05:54 PHST- 2021/04/18 00:00 [received] PHST- 2021/06/15 00:00 [accepted] PHST- 2021/08/02 05:54 [entrez] PHST- 2021/08/03 06:00 [pubmed] PHST- 2021/08/03 06:01 [medline] PHST- 2021/01/01 00:00 [pmc-release] AID - 10.3389/fnagi.2021.697029 [doi] PST - epublish SO - Front Aging Neurosci. 2021 Jul 14;13:697029. doi: 10.3389/fnagi.2021.697029. eCollection 2021.