外耳道のコンピューターグラフィックス

抄録

The purpose of this studies is to describe the three-dimensional image of external auditory canal (EAC) using computer-graphics methodes. For reconstracting the three-dimensional structure of EAC, a set of CT slice of temporal bone was prepared and image processing system was cosmosonell SA (Nicon). By this technique, three-dimensional image of EAC was clearly seen and EAC could be divided to several types, for examples, streight type and curved type etc, depending on their three dimensional image. Furthermore, three-dimensional relationships between EAC and the head of mandibular joint were described.