目的：分析螺旋CT引导下半月神经节脉冲射频（PRF）治疗三叉神经痛（TN）的安全性、有效性及长期 临床疗效。方法：选取接受半月神经节PRF治疗的经典TN患者121例的临床资料进行回顾性分析，比较患 者治疗前后BNI疼痛分级，记录围术期并发症；通过Kaplan-Meier分析患者的术后复发情况及长期疗效。 结果：PRF治疗经典TN的初始有效率为85.12%；患者术后1、6、12、48、96、120个月的无痛生存率分别为 85.12%、82.62%、78.98%、70.47%、63.98%、61.08%；治疗过程中未见明显不良并发症。结论：CT引导下半月 神经节PRF治疗经典TN，安全、有效，副作用少，适用于高龄、合并症多不能耐受全身麻醉的患者。

To retrospectively analyze the safety, efficacy, and long-term curative effect of spiral CT-guided pulse radiofrequency (PRF) therapy on gasserian ganglion for trigeminal neuralgia (TN). Methods: The medical data of 121 classic TN patients who underwent gasserian ganglion PRF treatment were analyzed, and preoperative and postoperative BNI pain intensity were compared. Data on perioperative complications were retrospectively collected, and the Kaplan-Meier analysis was used to evaluate pain recurrence and long-term curative effect. Results: The initial pain relief rate was 85.12%, and the cumulative recurrence-free survival after the procedure was 85.12%, 82.62%, 78.98%, 70.47%, 63.98%, and 61.08% at 1, 6, 12, 48, 96, and 120 months, respectively. There were no adverse complications noted during treatment. Conclusion: Spiral CT guided gasserian ganglion PRF treatment for classic TN is safe, effective and has few side effects. It is suitable for elderly patients with multiple comorbidities who cannot tolerate general anesthesia.