In-vivo measurement of Stress-Strain Distribution on the Humnan Ligament using Arthroscopic Images

使用关节镜图像体内测量人类韧带的应力应变分布

• 批准号: 14580823
• 负责人: HIROKAWA Shunji
• 金额: $ 2.75万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14580823/
• 关键词: Anterior Cruciate Ligament; Stress-Strain Distribution; Motion Capture; Arthroscopy; Fiber Bundle; Shading Image; Shape Reconstruction

The object of this study is to establish in vivo arthroscopy measurement system of surface strain distribution of the human knee ligaments. To solve technical and ethical problems subject to living body, we planned to use single plane image from less invasive arthroscopy for the analysis. We applied the modified motion capture system by which we would be able to detect the 3D positions of markers (skecles or textures on the ACL's surface) through an arthroscopic examination. When we applied the technique to measure the ACL strain however, we found the detectable Thus as an altenative, we applied the Shape from Shading method. Three-dimensional coordinate data were calculated using Level Set Method, using the brightness data of the processed image. And three-dimensional shape of ligament surface was reproduced by B-Spline. All parametric data necessary for calculation were introduced from the calibration image. The accuracy of our method was checked from known subjects. and thereby resulting in enough accuracy.

本研究旨在建立人体膝关节韧带表面应变分布的在体关节镜测量系统。为了解决活体的技术和伦理问题，我们计划使用微创关节镜的单平面图像进行分析。我们应用了改进的运动捕捉系统，通过该系统，我们将能够通过关节镜检查检测标记（ACL表面的骨骼或纹理）的3D位置。然而，当我们应用该技术测量ACL应变时，我们发现可检测到。因此，作为一种替代方法，我们应用了阴影形状方法。使用水平集方法，使用处理后图像的亮度数据计算三维坐标数据。并利用B样条曲线再现韧带表面的三维形状。计算所需的所有参数数据均从校准图像中引入。我们的方法的准确性进行了检查，从已知的主题。从而产生足够的精度。

项目成果

S.Hirokawa, K.Yamamoto, S.Ishikawa, R.Tsuruno: "Measurement of strain distribution on the ACL using a modified motion capturing method"Proc. of the fifth international symposium on computer methods in Biomechanics and Biomedical Engineering. (CD-ROM). (20

S.Hirokawa、K.Yamamoto、S.Ishikawa、R.Tsuruno：“使用改进的运动捕捉方法测量 ACL 上的应变分布”Proc。

S.Hirokawa, S.Ariyoshi, K.Takahashi, K.Maruyama: "Kinemativ measurement of knee prosthesis from single-plane projection"JSME Transactions of Bioengineering, Series C. 45・4. 1368-1376 (2003)

S.Hirokawa、S.Ariyoshi、K.Takahashi、K.Maruyama：“单平面投影膝关节假体的运动测量”JSME Transactions of Bioengineering，系列 C. 1368-1376 (2003)。

タン・ジュー・クイ, 石川聖二, 廣川俊二: "多視点画像を用いた変形物体の一括3次元モデル化法"画像電子学会誌. 32・4. 483-487 (2003)

Tan Joo Quy、Seiji Ishikawa、Shunji Hirokawa：“使用多视图图像的变形物体的批量 3D 建模方法”图像电子工程师学会杂志 32・4（2003 年）。

S.Hirokawa, T.Higa, N.Ohtsuki: "Application of Parameterized Polynomials for describing Free-formed Surfaces"Proc. of the 13th Conference of the European Society of Biomechanics. 157-158 (2002)

S.Hirokawa、T.Higa、N.Ohtsuki：“参数化多项式在描述自由曲面中的应用”Proc。

T.Sakoshita, S.Hirokawa: "Experimental Study on the Strucure-Property Relationship in the Ligament"Journal of Japanese Society for Clinical Biomechanics. Vol.24. 65-70 (2003)

T.Sakoshita、S.Hirokawa：“韧带结构-性能关系的实验研究”日本临床生物力学学会杂志。