Clinical Usefulness of Ultrasonography-Guided Laryngeal Electromyography

Hae Sang Park, Soo Yeon Jung, Jeong Hyun Yoo, Hyung Jun Park, Cha Hee Lee, Han Su Kim, Sung Min Chung

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Objectives/Hypothesis To investigate the proper approach and technical method of ultrasonography-guided laryngeal electromyography (US-guided LEMG). Study Design This is a prospective study. Methods Twenty patients who underwent US-guided LEMG were enrolled. US-guided LEMG was cooperatively performed by one otolaryngologist, one neurologist, and one radiologist. The location of the needle electrode was confirmed with US after electrode insertion into the laryngeal intrinsic muscle. The US transducer was applied on the neck by a transverse/midline and transverse/oblique approach to identify the cricothyroid (CT), thyroarytenoid (TA) muscles, and the location of the needle electrode. Results CT muscles were easily identified on US in all 20 patients. TA muscles were identified in 17 patients (85%). The transverse/oblique approach was helpful to detect TA muscle in case of calcified thyroid cartilage or anatomic variation. Conclusions US-guided LEMG, which enables the exact insertion of the needle electrode, improves the reliability of examination and is helpful in early detection and to prevent complications.

Original languageEnglish
Pages (from-to)100-103
Number of pages4
JournalJournal of Voice
Issue number1
StatePublished - 1 Jan 2016

Bibliographical note

Publisher Copyright:
© 2016 The Voice Foundation.


  • Laryngeal electromyography
  • Ultrasonography


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