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Abstract #1266

Automated Analysis of Three-dimensional Mandibular Movement Using Multi-section Dynamic MRI

Ryusuke Nakai 1 , Takashi Azuma 2 , Keiji Shigeno 1 , Mariko Wakatsuki 1 , Guoxiang Liu 2 , Osamu Takizawa 3 , and Hiroo Iwata 1

1 Institute for Frontier Medical Sciences, Kyoto University, Kyoto, Japan, 2 Center for Information and Neural Networks, National Institute of Information and Communications Technology, Osaka, Japan, 3 Siemens Japan K.K., Tokyo, Japan

In the current study, a technique was developed for continuous time-series mandibular imaging of multiple sections with analysis of time-series data and automatic measurement of the three-dimensional positions and rotation angles of the mandibular movement. The utility of this technique was evaluated by analysis of mandibular movement in volunteers. As a result, the automatic measurement technique had very good precision. This technique gives precise information that can facilitate diagnosis of temporomandibular joint disorder and mandibular movement disturbance. Therefore, this technique should permit rapid diagnosis of symptoms and disorders by dentists.

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