The photo shows patient positioning and the probe placement for ultrasound-guided intercostal block. For details of block technique, refer to the UpToDate topic on nerve blocks of the scalp, neck, and trunk.
Reproduced with permission from Wolters Kluwer Health, Inc.: Ben-Ari A, Moreno M, Chelly JE, et al. Ultrasound-guided paravertebral block using an intercostal approach. Anesth Analg 2009; 109(5):1691-1694. Copyright © 2009 International Anesthesia Research Society.
https://journals.lww.com/anesthesia-analgesia/pages/default.aspx.