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Fig. 1 | BMC Anesthesiology

Fig. 1

From: Modified technique for thermal radiofrequency ablation of Thoracic dorsal root ganglia under combined fluoroscopy and CT guidance: a randomized clinical trial

Fig. 1

Fluoroscopic pictures showing the technique of thoracic DRG transforaminal approach: a) ipsilateral 15° oblique view with 4 RF needles at T3, 4, 5, 6 levels (black arrows point at trajectory-end-on-needles orientation), b) P-A view showing the 4 needles tips nearly at the neural foramina, c) lateral view showing the RF needles tips in the transforaminal positions after contrast injection (black arrow points at the characteristic signet ring appearance of DRG), d) P-A view showing transforaminal, epidural and intercostal spread of the contrast at the targeted levels

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BMC Anesthesiology

ISSN: 1471-2253

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