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. 2020 Feb 26;13:461–464. doi: 10.2147/JPR.S236812

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© 2020 Liu et al.

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A schematic illustration of ultrasound-guided lidocaine injection.

Notes: Red arrows: needle trajectory; white arrows: arrows for indications; red-dotted circles: the shapes of the arteries; blue-dotted circle: the wall of internal jugular vein; green-dotted circle: diffusion of local anesthetics; white-dotted line: the shape of transverse process.

Abbreviations: ASC, Anterior scalene muscle; CA, Carotid artery; D, Drug; IJV, Internal jugular vein; LC, Longus colli muscle; N, puncture needle; SCM, Sternocleidomastoid muscle; TH; Thyroid gland; TP, Transverse process; VA, Vertebral artery.