Ahmad M, Dargaud J, Morin A, Cotton F
Laboratoire d'anatomie, UFR de Médecine Lyon Grange- Blanche, Université Lyon I, 8, Avenue Rockefeller, 69373, Lyon Cedex 08, France.
Surg Radiol Anat. 2006 Oct;28(5):481-5. doi: 10.1007/s00276-006-0120-1. Epub 2006 Apr 21.
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.
喉部复杂的解剖结构是其多种气道功能的结果。本研究的目的是评估哪些喉部软组织的解剖结构可以通过磁共振成像（MRI）来确定，并研究使用该技术评估喉部动态功能的可行性。在活体状态下获取了6名健康志愿者在发声过程中喉部的MRI图像。要求志愿者深呼吸并延长呼气，以便用正常声音延长元音[i]（如在单词“key”中）、[a]（如在单词“car”中）以及辅音[ch]（如在单词“ship”中）的发音。我们展示了喉部位置的变化，发[i]音时位置高，发[a]音时位置低，以及声带的变化，发[i]音时声带内收和外展，发[ch]音时声带保持外展。动态MRI能够进行多平面高分辨率成像。它可以提供有关喉部解剖结构的信息，并且还能够对移动的喉部结构进行成像，并分析发声过程中声带的振动情况。
