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. 2020 Mar 16;73(5):394–400. doi: 10.4097/kja.20065

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Copyright © The Korean Society of Anesthesiologists, 2020

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. 8. — Needle manipulation under ultrasound. (A) Illustration of possible needle manipulation during sagittal-plane ultrasound-guided (USG) paravertebral block (PVB). Note that unlike landmark-based technique, the needle may be redirected cephalad safely without risking injury to the neurovascular bundle. Used with permission of Mayo Foundation for Medical Education and Research, all rights reserved. (B) Illustration of possible needle orientation during transverse-plane USG-PVB. Note that with proper visualization of visceral and parietal pleura, the needle may be directed medially safely. Used with permission of Mayo Foundation for Medical Education and Research, all rights reserved.