Skip to main content
Fig. 1 | BMC Anesthesiology

Fig. 1

From: Comparison of diffusion ranges at different local anesthetic volumes during superior laryngeal nerve block

Fig. 1

Schematic diagram illustrating anatomy and ultrasound localizations

A Diagram of ultrasonic probe location; B Schematic diagram illustrating anatomy and ultrasound localizations Measurement of SLN puncture site to surrounding structures under ultrasound; C Schematic diagram illustrating anatomy and ultrasound localizations Dissection of the right side of the larynx; D Measurement of SLN puncture site to surrounding structures on the fresh larynx specimens; E Photograph of the lidocaine/methylene blue mixture deposited after SLN blocking. iSLN, internal branch of the superior laryngeal nerve; THM, thyrohyoid membrane; Hy, hyoid bone, greater horn; Thyr, thyroid cartilage; SLA, superior laryngeal artery; uD1, distance between the iSLN and hyoid; uD2, distance between the iSLN and thyroid cartilage; D3, distance between the iSLN and anterior midline of the neck; uD4, the vertical distance from the skin surface

Back to article page

BMC Anesthesiology

ISSN: 1471-2253

Contact us