中国组织工程研究

中国组织工程研究 ›› 2010, Vol. 14 ›› Issue (35): 6647-6650.doi: 10.3969/j.issn.1673-8225.2010.35.047

• 骨与关节图像与影像 bone and joint imaging • 上一篇    

螺旋CT资料建立颅面三维模型

龚振宇1，李国华1，刘彦普2，何黎升2，周树夏2   

  1. 1解放军南京军区福州总医院口腔科，福建省福州市  350025；2解放军第四军医大学口腔医学院颌面外科，陕西省西安市  710032
  • 出版日期:2010-08-27 发布日期:2010-08-27
  • 作者简介:龚振宇☆，男，1973年生，黑龙江省齐齐哈尔市人，汉族，2004年解放军第四军医大学口腔医学院毕业，博士，副主任医师，主要从事颌面部创伤及功能性整复的研究。
  • 基金资助:

    福建省科技厅青年人才创新基金资助项目(2008F3089)；福建省科技厅青年人才创新基金资助项目(2008F3088)。

Construction of a three-dimensional skull model using spiral computer tomography data

Gong Zhen-yu1, Li Guo-hua1, Liu Yan-pu2, He Li-sheng2, Zhou Shu-xia2   

  1. 1 Department of Stomatology, Fuzhou General Hospital of Nanjing Military Area Command, Fuzhou 350025, Fujian Province, China; 2 Department of Oral and Maxillofacial Surgery, Stomatological College, Fourth Military Medical University, Xi’an  710032, Shaanxi Province, China
  • Online:2010-08-27 Published:2010-08-27
  • About author:Gong Zhen-yu☆, Doctor, Associate chief physician, Department of Stomatology, Fuzhou General Hospital of Nanjing Military Area Command, Fuzhou 350025, Fujian Province, China zhenyu_gong@yahoo.com.cn
  • Supported by:

    the Innovation Foundation for Young Talent of Science and Technology Department of Fujian Province, No. 2008F3089*, 2008F3088*

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被引次数

1

摘要：

背景：三维螺旋CT可以在胶片或计算机屏幕上展示多角度的立体图像，但复杂的三维解剖形态很难在二维的胶片或计算机屏幕上直观显示，颅颌面外科的手术模拟和方案设计往往更需要三维实体模型。
目的：用螺旋CT数据资料建立颅面三维模型，探讨该模型在颅颌面外科领域的应用。
方法：患者行螺旋CT扫描，层厚2 mm，螺距1.0 mm，利用工作站，进行扫描图像的容积三维重建后，重新间隔分层，利用CuteFTP 4.0软件以BMP格式下载。应用课题组自主开发的CT图象处理软件对已下载的二维图象进行过滤、筛减、降噪、校正失真等处理，对图像的边缘轮廓进行提取，得到面颅骨皮质骨边缘轮廓的矢量化线图，将该线图数据输入Surfacer 9.0重建软件，对轮廓曲线进行矢量叠加，从而得到面颅骨的三维三角形面片线框模型及实体模型。进一步在该模型上按镜像关系重构衬垫物的三维模型。
结果与结论：实验得到了颅面骨骼表面轮廓的三维实体模型，并在其上进行了整形手术的计算机辅助设计，通过快速成型技术加工出衬垫物模板。用螺旋CT数据资料可以建立颅面三维模型，该模型在颅颌面畸形损伤肿瘤等的诊断和治疗中将发挥重要作用。

关键词: 体层摄影术, 计算机辅助, 图象处理, 快速成型, CT数据

Abstract:

BACKGROUND: A three-dimensional spiral computer tomography can display stereoscopic pictures with multi angles on films or computer screens. However, it is hard to display complex three-dimensional anatomical morphology on two-dimensional films or computer screens. Thus, three-dimensional models are needed in craniomaxillofacial surgery simulation or conceptual design.
OBJECTIVE: To establish a three-dimensional skull model using spiral computer tomography data and to explore its application in craniofacial surgery.
METHODS: Skull of the patient was scanned with Picker 6000 spiral computer tomography with 2.0 slice thickness and 1.0 pitch, and the obtained data were treated in Voxel Q image workstation for three-dimensional reconstruction with volume rendering technique. After having been downloaded to personal computer at 0.1 mm interval, the transaxial two-dimensional image data were converted into two-dimensional digitized contour data by using image processing software developed by the experimental team. The wire frame and solid images of craniofacial triangular facets could be reconstructed when the digitized data were inputted into image processing software of Surfacer 9.0.
RESULTS AND CONCLUSION: The three-dimensional wire frame and solid image of skull was reconstructed and computer aided design for plastic operation was accomplished on it. Then the simulacrum of underlay was obtained by rapid prototyping technology. A three-dimensional skull model could be established using spiral computer tomography data. It might play an important role in the diagnosis and treatment of tumors, injuries and abnormality in craniofacial surgery.

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