Effects of the MR-DTI Characteristics of the Trigeminal Ganglion Target on Radiofrequency Treatment in Patients with Trigeminal Neuralgia: A Retrospective Observational Clinical Study

Figure 5

Probe placement into the FO confirmed by C-arm radiography. (a) Three-dimensional computed tomography reconstruction images show the anatomical adjacency among the FO (red shadow), PPR (blue shadow), and LPP (yellow shadow). (b) The first puncture into the FO shows that the probe reached the FO successfully and that the probe was straight. (c) The second puncture to the FO. We decreased the arc angle, and the probe was curved due to being obscured by the PPR. (d) The third puncture to the FO. We increased the arc angle to reach the TGT with the probe through the FO.

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