A Novel Designing System of Speech Aid from Imaging Analysis of Oral Cavity Volume for Cerebrovascular Accident and Oral Cancer Patients

本研究对象为正常受试者和伴有脑血管意外的言语障碍患者。当受试者在发[ta]，[na],[ka]，[ra]音前保持舌头位置时，对受试者头部进行磁共振成像。从这些磁共振图像中，每个受试者的舌头表面和上颚之间的距离被测量为140点。每个发音（[ta],[na],[ka],[ra]）的平均口腔容积数据库由正常受试者的数据组成。然而，脑血管意外患者的MR精细图像难以获取。因为磁共振成像的时间（每次发音3分钟）对于脑血管意外患者在发音前保持舌位似乎太长了。正常受试者发音时口腔体积数据库可为脑血管意外或口腔癌患者发音时口腔体积分析的后续研究提供重要信息。从即时为这些患者设计语音辅助工具的角度来看，预测基于语音中的口腔体积的数据库将是非常需要的。

Normal subjects and patients with speech disorder with cerebrovascular accident participated in this study. The magnetic resonance(MR) imaging of the head of the subjects were taken during the subject kept the tongue position right before pronounce [ta],[na],[ka],[ra]. From these MR images, the distance between the tongue surface and the palate was measured at 140 points for each subject. The data base of average oral cavity volume for each pronounce ([ta],[na],[ka],[ra]) were made from the data of normal subjects. However, it was difficult to take fine MR Images of the patients with cerebrovascular accident. Because the time of taking MR images (3 minutes for one pronounce) seemed to be too long for the cerebrovascular accident patients to keep the tongue position right before pronounce.The data base of oral cavity volume during pronounce in the normal subjects could be an important information for continuous studies about analysis of oral cavity volume during pronounce in the cerebrovascular accident or oral cancer patients. From the view point of, for instantly, designing the speech aid for those patients, it is predicted that the data base based from the oral cavity volume in speech could be highly needed.