ĐẶC ĐIỂM HÌNH ẢNH CỘNG HƯỞNG TỪ XUNG ĐỘT THẦN KINH VII - MẠCH MÁU VÀ MỐI LIÊN QUAN VỚI KẾT QUẢ ĐIỀU TRỊ BOTULINUM TOXIN Ở BỆNH NHÂN CO THẮT NỬA MẶT NGUYÊN PHÁT

Abstract

Objectives: Description of the MRI-CISS imaging of facial nerve in primary hemifacial spasm’s patients and of the correlation between neurovascular compression with efficacy of treatment botulinum toxin and with Jankovic disability rating scale. Materials and methods: Descriptive study. A total of 58 patients with primary hemifacial spasm were subject to 3D-CISS MRI of facial nerve and were treated by injections of botulinum toxin A (Dysport^®) in Tam Anh Hospital from 6/2021 to 5/2022. Results: Fifty-eight patients (11 male, 47 female) were included in the study, the average age of 57,1 ± 10,0 years. T2-CISS revealed vascular compression in 96,6% patients (Grade I: 17,3%, grade II: 56,9%, grade III: 22,4%); 63,8% patients had artery compression or contact at REZ/TZ. The offending vessel was inferior cerebellar artery in 56,9% patients. The ability to achieve good efficacy of treatment of groups who have degree of neurovascular compression grade I and II is 6,329 times higher than that of grade III. Conclusion: We concluded that MRI T2-CISS should be performed in all primary hemifacial spasm’s patients for detection and evaluation of neurovascular compression.