Establishment of Cordinate Transformation Technique for Growth Analysis.

生长分析坐标变换技术的建立。

• 批准号: 05671723
• 负责人: SHIBASAKI Yoshinobu
• 金额: $ 1.28万
• 依托单位: Showa University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05671723/
• 关键词: Cordinate Transformation; Vector; Growth and Development; Morphological Change; Mandible; 成長速度ベクトル; 三次スプライン関数; 評価関数; セファログラム

The dynamics of the maxillofacial bone formation during postnatal growth has a complex process. The growth pattern of the mandible has been assessed by the application of various methods developed for the cephalometric measurement of the skeletal size or positions. However, the lack of information describing the real shapes cannot evaluate the changes of growth sites in lives. In this article, new method for growth analysis was introduced and 25 individuals with longitudinal cephalometric data aged 7-19 years, mean 13 years were evaluated.New analysis was described following equations :Fv = SIGMA (abs (Vs-Vh) *D1)Vs : Growth velocity, Vh : average velocityD1 : Distance between neighboring two points on same shapesGn = SIGMA (abs (S) )abs (S) : changes of areaH = Fv + GnSuperposed position was difined where H presented the minimum value. The application of this new method using mathmatical coordinate transformation technique was assessed to quantify and to visualize the mandibular bone remodeling during growth. From the results, this new transformation approach to the study of human growth may provide clinicians with a valuable tool for long ranged treatment planning.

颌面骨生长发育的动力学过程是一个复杂的过程。下颌骨的生长模式已被评估的应用程序开发的各种方法的头影测量的骨骼大小或位置。然而，缺乏描述真实的形状的信息，无法评估生命中生长部位的变化。本文介绍了一种新的生长分析方法，并对25名7-19岁（平均13岁）的正常成人进行了生长分析，新的生长分析公式为：Fv = SIGMA（abs（Vs-Vh）*D1）Vs：生长速度，Vh：平均速度D1：同一形状上相邻两点之间的距离Gn = SIGMA（abs（S））abs（S）：面积变化H = Fv + Gn确定了H最小处的叠加位置。应用数学坐标变换技术对下颌骨生长发育过程中的骨改建进行了定量和可视化研究。从结果来看，这种新的人类生长研究方法可能为临床医生提供长期治疗计划的有价值的工具。