Measurement of 3D Shapes of Vocal Tract, Dental Crown and Nasal Cavity Using MRI
M. Matsumura, Takuya Niikawa, Kōji Shimizu, Yasuji Hashimoto, Tatsuya Morita · IEEJ Transactions on Electronics Information and Systems · 1994
This paper deals with the measurement of 3D shapes of vocal tract, dental crown and nasal cavity using the magnetic resonance imaging (MRI). 3D MR images of the vocal tract and the nasal cavity during Japanese vowels and consonant /s/ productions were obtained. MR images of dental crown that contain a small amount of water were obtained using a dental crown plate. A computer algorithm for boundary tracing of cross sections of the vocal tract and the nasal cavity from the 3D MR image was proposed. 3D shapes of the vocal tract and nasal cavity were obtained using the present algorithm.