Study On A Proceduce That The Color Doppler Ultrasound With 3D CT Reconstruction Guides The Radiofrequency Thermocoagulation Of The Peripheral Divisions Of The Trigeminal Nerve And Its Effect

Aims:The purpose of this study was to improve the radiofrequency thermocoagulation of the peripheral branches of the trigeminal nerve,so as to improve the accuracy and safety of the puncture and improve the therapeutic effect of trigeminal neuralgia.Methods:(1)Clinical data of 8 patients were collected in our hospital during2014 to 2018,all of whom accepted preoperative three-dimensional heed CT reconstruction and ultrasound-guided radiofrequency thermocoagulation.(2)We obtained the maximum and minimum diameters of the supraorbital foramen,the suborbital foramen and the mental foramen from the three-dimensional CT reconstruction of the skull.The bone contours of three foramens were also obtained.Then,we could calculate the penetration depth and angle.(3)Real-time intraoperative ultrasound could delineate puncture targets.(4)We can evaluated the clinical efficacy of the improved radiofrequency thermocoagulation of the peripheral divisions of the trigeminal nerve through Visual Analogue Scale(VAS).Results:Through preoperative head 3D CT reconstruction and real-time ultrasound navigation,all 8 patients were successfully punctured once.Eight patients received ultrasound-guided radiofrequency ablation ofthe peripheral branches of the trigeminal nerve,and the immediate postoperative analgesia efficiency was 100%.Median pain relief was 12 months.Complications such as bleeding and infection were not observed in8 patients.Only 1 patient appeared numbness in the chin skin.The patient's numbness improved after six months.Conclusion:Radiofrequency ablation of the peripheral branches of the trigeminal nerve with 3D CT reconstruction of the skull and color doppler ultrasound is an immediately effective,simple and safe method for the treatment of trigeminal neuralgia.