PMC8368125_01
(A) CT-guided PRF on the Gasserian ganglion. (B) High cervical SCS at the C1-C2 level. (C) A 14-G needle inserted at the level of the right zygomatic bone. (D) High cervical SCS combined with infraorbital nerve (ION) PNS.
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F1
Upon consultation with our clinic, the patient was treated using a computed tomography (CT)-guided high-voltage, long-duration PRF on the Gasserian ganglion with a 20-G, insulated needle (14 cm,10-mm active tip, Baylis Medical Company, Montreal, Canada) (Figure 1A). Paul, MN, USA) was positioned at the high cervical region (C1-C2) (Figure 1B) immediately to the right of midline. The same type of lead was positioned percutaneously through a 14-G needle from lateral to medial at the level of the right zygomatic bone (Figures 1C,D).
PMC8368125_02
(A) PNS on the left SON and STN. (B) A 14-G needle was placed next to the left external FR opening. (C) The stimulation lead was placed next to the left external opening of the FR. (D) Both stimulation leads were anchored on the surface of the skin.
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F2
Paul, MN, United States) was positioned above the supraorbital ridge using a percutaneous needle (Figure 2A). After sterilization and local anesthesia infiltration with 2 ml of 0.5% lidocaine, a 14-G needle was inserted from the inferior side of the zygomatic bone to the FR (Figure 2B). When the needle tip was confirmed to be next to the external opening of the FR on a CT scan, a second, identical stimulation lead was placed next to the external FR opening (Figure 2C). Finally, we anchored both stimulation leads on the surface of the skin (Figure 2D).