Functional morphology of phonation evaluated by dynamic MRI.

Surgical and Radiologic Anatomy : SRA
M AhmadFrançois Cotton

Abstract

The complex anatomy of the larynx is a consequence of its various airway functions. The aim of the present study was to evaluate which anatomical structures of the larynx soft tissues could be defined using MRI, and to investigate the feasibility of using this technique to assess the dynamic functions of the larynx. MRI images of the larynx of six healthy volunteers during speech production were obtained in vivo. The volunteers were asked to breathe out long and deep in order to prolong in a normal voice the emission of the vowels [i] (as in key) and [a] (as in car) and the consonant [ch] (as in ship). We demonstrated the modification of the larynx position, which is high for [i] and low for [a], and the modification of the vocal folds which is adducted and abducted in [i] and kept abducted in [ch]. Dynamic MRI allows the possibility of multiplanar high-resolution imaging. It can provide information about the anatomy of the larynx and, it also has the ability to image moving laryngeal structures and to analyze vocal fold vibrations during phonation.

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Citations

Oct 12, 2007·The Journal of the Acoustical Society of America·Chih-Chung HuangK Kirk Shung
Jan 8, 2009·Behavioural Brain Research·Maristela Sayuri Inoue-AraiKeiji Moriyama
Dec 18, 2007·Journal of Voice : Official Journal of the Voice Foundation·Mayssa AhmadFrançois Cotton
Apr 18, 2016·European Radiology·Marina Mat BakiShonit Punwani
Jan 1, 2009·Acta chirurgica Iugoslavica·J P MilovanovićA Milovanović

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