Focused Ultrasound Thalamotomy for Refractory Essential Tremor: A Japanese Multicenter Single-Arm Study

Autor: Hidehiro Hirabayashi, Hajime Kamada, Hideyuki Ohnishi, Kazuhiko Sadamoto, Hiroki Hori, Hideki Mochizuki, Kenji Fukutome, Manabu Kanemoto, Keiji Igase, Kimito Kondo, Kazumichi Yamada, Ichiro Matsubara, Hironori Furukawa, Shiro Horisawa, Toshio Yamaguchi, Takanori Ohnishi, Keiichi Abe, Haruhiko Kishima, Takaomi Taira, Satoru Oshino
Rok vydání: 2021
Předmět:
Zdroj: Neurosurgery. 88:751-757
ISSN: 1524-4040
0148-396X
Popis: BACKGROUND Several feasibility studies and a randomized, controlled, multicenter trial have demonstrated the safety and efficacy of unilateral transcranial magnetic resonance-guided focused ultrasound (FUS) lesioning of the ventral intermediate thalamic nucleus in treating essential tremor. OBJECTIVE To evaluate the safety and efficacy of FUS thalamotomy in a Japanese patient cohort through a prospective, multicenter, single-arm confirmatory trial. METHODS A total of 35 patients with disabling refractory essential tremor underwent unilateral FUS thalamotomy and were followed up for 12 post-treatment months. Safety was measured as the incidence and severity of treatment-related adverse events. Efficacy was measured as the tremor severity and quality of life improvements using the Clinical Rating Scale for Tremor and Questionnaire for Essential Tremor. RESULTS The mean skull density ratio (SDR) was 0.47. There was a significant decrease in the mean postural tremor score of the treated hand from baseline to 12 mo by 56.4% (95% CI: 46.7%-66.1%; P
Databáze: OpenAIRE