计算机断层扫描成像在三维头影测量分析中标准化的平面定位
Plane orientation for standardization in 3-dimensional cephalometric analysis with computerized tomography imaging.
作者信息
Lagravère Manuel O, Hansen Lars, Harzer Winfried, Major Paul W
机构信息
Orthodontic Graduate Program, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada.
出版信息
Am J Orthod Dentofacial Orthop. 2006 May;129(5):601-4. doi: 10.1016/j.ajodo.2005.11.031.
INTRODUCTION
The purpose of this study was to propose certain landmarks and planes to standardize 3-dimensional image orientation.
METHODS
Cone-beam computerized tomographic images were obtained from 10 adolescent patients and analyzed with AMIRA software (AMIRA, Mercury Computer Systems, Berlin, Germany).
RESULTS
Four points (ELSA, right superior external auditory meatus, left superior external auditory meatus, and mid-dorsum foramen magnum) were located on each image. The axial-horizontal plane (x-y plane) was then determined by using both superior external auditory meatus and ELSA; the sagittal-vertical plane (z-y plane) was formed by ELSA and mid-dorsum foramen magnum perpendicular to the x-y plane.
CONCLUSIONS
All points had high intrareliability and were adequate for standardizing the orientation of 3-dimensional images.
引言
本研究的目的是提出某些标志点和平面，以规范三维图像的方向。
方法
从10名青少年患者获取锥形束计算机断层扫描图像，并使用AMIRA软件（AMIRA，水星计算机系统公司，德国柏林）进行分析。
结果
在每张图像上确定四个点（ELSA、右侧上外耳道、左侧上外耳道和枕骨大孔背侧中点）。然后利用上外耳道和ELSA确定轴向水平面（x-y平面）；矢状垂直面（z-y平面）由ELSA和枕骨大孔背侧中点形成，且垂直于x-y平面。
结论
所有点均具有较高的内部可靠性，足以规范三维图像的方向。
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