Mehta Daryush D, Deliyski Dimitar D, Zeitels Steven M, Quatieri Thomas F, Hillman Robert E
Center for Laryngeal Surgery and Voice Rehabilitation, Massachusetts General Hospital, Boston, MA 02114, USA.
Ann Otol Rhinol Laryngol. 2010 Jan;119(1):1-9. doi: 10.1177/000348941011900101.
Although near-normal conversational voices can be achieved with the phonosurgical management of early glottic cancer, there are still acoustic and aerodynamic deficits in vocal function that must be better understood to help further optimize phonosurgical interventions. Stroboscopic assessment is inadequate for this purpose.
A newly developed color high-speed videoendoscopy (HSV) system that included time-synchronized recordings of the acoustic signal was used to perform a detailed examination of voice production mechanisms in 14 subjects. Digital image processing techniques were used to quantify glottal phonatory function and to delineate relationships between vocal fold vibratory properties and acoustic perturbation measures.
The results for multiple measurements of vibratory asymmetry showed that 31% to 62% of subjects displayed higher-than-normal average values, whereas the mean values for glottal closure duration (open quotient) and periodicity of vibration fell within normal limits. The average HSV-based measures did not correlate significantly with the acoustic perturbation measures, but moderate correlations were exhibited between the acoustic measures and the SDs of the HSV-based parameters.
The use of simultaneous, time-synchronized HSV and acoustic recordings can provide new insights into postoperative voice production mechanisms that cannot be obtained with stroboscopic assessment.
尽管早期声门癌的嗓音外科治疗可实现接近正常的对话声音，但嗓音功能仍存在声学和空气动力学缺陷，必须更好地理解这些缺陷，以进一步优化嗓音外科干预措施。频闪喉镜评估不足以实现这一目的。
使用一种新开发的彩色高速视频内镜（HSV）系统，该系统包括对声学信号进行时间同步记录，对14名受试者的发声机制进行详细检查。采用数字图像处理技术量化声门发声功能，并描绘声带振动特性与声学扰动测量之间的关系。
多次振动不对称测量结果显示，31%至62%的受试者平均值高于正常水平，而声门闭合持续时间（开放商）和振动周期性的平均值在正常范围内。基于HSV的平均测量值与声学扰动测量值无显著相关性，但声学测量值与基于HSV的参数标准差之间存在中度相关性。
同时使用时间同步的HSV和声记录能够为术后发声机制提供新的见解，这是频闪喉镜评估无法获得的。
