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. 2019 Oct 28;14(10):e0224487. doi: 10.1371/journal.pone.0224487

Fig 2. Endoscopic findings after erector spinae plane block.

Fig 2

(a) A stained SCTL was identified at the level of T5, but no paravertebral spread was observed after injection with 10 ml of dye. (b) A stained SCTL at the level of T5 was identified, and paravertebral spread was also observed after injection with 30 ml of dye. (c) Deep staining of the spinal nerve in the intervertebral foramen at the T5 level was onserved after injection with 30 ml of dye. (d) A spinal nerve at the T7 level was stained after injection with 30 ml of dye, but the amount of dye was minute. SCTL is the superior costotransverse ligament.