Effects of Ultrasound-Guided Stellate Ganglion Block on Postoperative Quality of Recovery in Patients Undergoing Breast Cancer Surgery: A Randomized Controlled Clinical Trial

Figure 1

Horizontal ultrasound imaging of the stellate ganglion block. SCM, sternocleidomastoid muscle; IJV, internal jungle vein; CA, carotid artery; Lco, longus colli muscle, C6TP, transverse processes of the sixth cervical vertebra.