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目的:探讨面肌痉挛患者的颈静脉结节厚度对其发病和显微血管减压术疗效的影响。方法:选择西安交通大学第二附属医院神经外科自2017年6月至2018年5月行显微血管减压术治疗的135例面肌痉挛患者，术前在面神经横断面MRI稳态进动平衡序列(FIESTA)图像上测量颈静脉结节厚度。术后第1天按患者症状是否完全缓解将其分为症状完全缓解组(112例)和症状残留组(23例)。比较所有患者患侧和健侧颈静脉结节厚度、颈静脉结节与脑干之间动脉通过情况，以及症状完全缓解组和症状残留组患者患侧颈静脉结节厚度的差异。结果:135例患者患侧和健侧颈静脉结节厚度差异无统计学意义(n P>0.05)。135例患者患侧颈静脉结节与脑干之间动脉通过率(95.6%)明显高于健侧(57.0%)，差异有统计学意义(n P<0.05)。术后第1天症状残留组患者患侧颈静脉结节厚度[(5.13±2.19) mm]明显高于症状完全缓解组[(4.03±1.16) mm]，差异有统计学意义(n P<0.05)。n 结论:颈静脉结节增厚与面肌痉挛患者的发病无关，但可能影响显微血管减压术后即刻的治疗效果。“,”Objective:To investigate the effect of jugular tubercle thickness on pathogenesis of hemifacial spasm (HFS) and its curative efficacy by microvascular decompression (MVD).Methods:One hundred and thirty-five HFS patients accepted MVD in our hospital from June 2017 to May 2018 were enrolled in this study. The thickness of the jugular tubercle was measured on preoperative magnetic resonance imaging (MRI) with steady state acquisition (FIESTA) sequence. The differences of jugular tubercle thickness and arterial flow rate from the jugular tubercle to the brainstem between the healthy side and symptomatic side in these patients were compared. These patients were divided into immediate symptom-relief group (n n=112) and symptom residual group (n n=23) according to the symptom relief one d after MVD; the difference of jugular tubercle thickness between the two groups were compared.n Results:No significant difference in the jugular tubercle thickness was noted between the healthy side and the symptomatic side in all 135 patients (n t=0.787, n P=0.432). The arterial flow rate from the jugular tubercle to the brainstem in the symptomatic side (95.6%) was significantly higher than that in the healthy side (57.0%, n P<0.05). The jugular tubercle thickness in the symptomatic residual group ([5.13±2.19] mm) was significantly higher than that in the immediate symptom-relief group ([4.03±1.16] mm,n t=2.114, n P=0.0396).n Conclusion:The thickness of jugular tubercle is not associated with HFS onset, but may affect the immediate outcome of MVD.