PMC5134110_01
Lateral view fluoroscopic image shows entry of needle beyond foramen ovale and tip position about 5-6 mm above the clivus to be optimally located in V1 division of trigeminal nerve (original image)
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F1
The needle was guided further to be positioned at 5 mm above clivus [Figure 1].
Radiofrequency generator [Model RFG-3C PLUS ESU, Manufacturer: Radionics , Burlington, MA], displaying Pulsed RF mode "on." In view of the procedure being performed on the ophthalmic division, the output voltage was kept low at 7 V and tip temperature at 37 C (original image)
SNI-7-818-g002.jpg
PMC5134110_01_SNI-7-818-g002.jpg
F2
A 33 mA current with a low output voltage of 7 V allowed the temperature to be maintained at 37 C (euthermia) [Figure 2].