CAJ | 학술논문

目的建立一个满足临床和科研要求的可视化的多来源多精度的颅颌面三维数字化模型.方法采用锥体束断层CT(CBCT)扫描整个头部,利用不同组织的亨氏单位(Houns Field值)的不同,提取出面部软组织、颌面部骨骼以及牙列3种组织结构,利用三维重建的方法,重构出面部、颌骨和牙齿三部分的数字化三维模型,同时采用激光扫描的方法获得带有纹理信息的面部三维模型以及高精度三维数字化牙列模型,利用三维图形学中的配准技术,将激光扫描获得的面部、三维模型转化到CT来源的重建的三维颅颌面数字化模型所在坐标系.结果获得一个带有颜色信息的面部软组织、高精度牙列和清晰骨骼的复合三维数字化颅颌面模型.结论多来源的三维数字化颅颌面模型是一种能够达到临床和科研要求的高精度数字化模型.
목적 건립일개만족림상화과연요구적가시화적다래원다정도적로합면삼유수자화모형.방법 채용추체속단층CT(CBCT)소묘정개두부,이용불동조직적형씨단위(Houns Field치)적불동,제취출면부연조직、합면부골격이급아렬3충조직결구,이용삼유중건적방법,중구출면부、합골화아치삼부분적수자화삼유모형,동시채용격광소묘적방법획득대유문리신식적면부삼유모형이급고정도삼유수자화아렬모형,이용삼유도형학중적배준기술,장격광소묘획득적면부、삼유모형전화도CT래원적중건적삼유로합면수자화모형소재좌표계.결과 획득일개대유안색신식적면부연조직、고정도아렬화청석골격적복합삼유수자화로합면모형.결론 다래원적삼유수자화로합면모형시일충능구체도림상화과연요구적고정도수자화모형.
Objective To establish a three-dimensional digitized visible model to meet the clinical and research needs.Methods The head of the volunteer was scanned by a cone beam CT (CBCT).The bone tissue,the facial soft tissue and the teeth were extracted from the cone beam CT raw data according to the different Houns field values.The 3D digital craniofacial model was reconstructed from the three tissues extracted from the CBCT original data.The 3D dental model with high resolution was acquired by scanning the dental cast with the laser scanner.The 3D facial model with texture was acquired by scanning the volunteer's face directly by other laser scanner.With the regis tration algorithm in 3D graphics,the 3D facial model with texture and the 3D dental model with high resolution were transformed to the same coordinate which was of the 3D digital craniofacial model.Results We acquired a complicated 3D craniofacial digital model which combined the teeth model with high resolution,the bone model and the face model with texture.Conclusions The method is able to accurately establish the craniofacial digital model.