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. 2022 Apr 4;75(4):295–306. doi: 10.4097/kja.22138

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Copyright © The Korean Society of Anesthesiologists, 2022

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 1. — Anatomical targets of paraspinal blocks at the mid-thoracic region on sectional images of micro-computed tomography. (A) A cross-sectional image at the level of the transverse process. (B) A cross-sectional image of the intertransverse process region. (C) A sagittal-sectional image of the intertransverse process region. Arrows indicate the paraspinal block techniques. The arrowheads indicate the superior costotransverse ligament (SCTL). The asterisk indicates the costotransverse space between the rib (R) and transverse process (TP). The red dotted lines indicate the erector spinae fascial plane. PVB: paravertebral block, RLB: retrolaminar block, ESP: erector spinae plane block, ITP: intertransverse process block, SP: spinous process, L: vertebral lamina, P: pleura, CTJ: costotransverse joint, CVJ: costovertebral joint, ES: erector spinae muscles, IAP: inferior articular process, DRG: dorsal root ganglion, ICN: intercostal nerve.