[Research of the puncture depth in treatment of trigeminal neuralgia (TN) by radiofrequency thermocoagulation(RFT) under CT location].
OBJECTIVE
To control the puncture depth properly and avoid the complications, CT scan was used to measure the depth as the puncture needle perforated through the foramen ovale.


METHODS
Analysis of the CT scan diagrams of 121 cases suffering from TN cured by RFT, and measuring the puncture depth.


RESULTS
The average puncture depth was 0.88 cm, the maximum was 1.6 cm, and the minimum was 0.4 cm.


CONCLUSIONS
The puncture depth can be manipulated correctly by CT location, the second and third branches can be avoided to be damaged within 0.8 cm, and the first branch can be avoided to be injured between 1.2 cm and 1.5 cm.
Zhang
Wei-jie
WJ
Dept. of Oral Maxillofacial Surgery, Ninth People's Hospital, Shanghai Second Medical University, Shanghai 200011, China. zwj1891502@sina.com
Wang
Yong
Y
Chen
Min-jie
MJ
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017115:Catheter Ablation; D004564:Electrocoagulation / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011677:Punctures; D014057:Tomography, X-Ray Computed; D014276:Trigeminal Nerve / Q000601:surgery*; D014277:Trigeminal Neuralgia / Q000601:surgery*