A 3D Shape Reconstruction of Ligament from Arthroscopic Images

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概要

• 論文の詳細を見る

• In vivo data on the biomechanics of knee ligaments and their behavior understress are necessary to understand and treat knee injuries. To obtain this data,accurate measurement of strains on and in the ligament is necessary. Technicaland ethical considerations make such in vivo measurements of a human kneedifficult or impossible. To overcome these problems, we planned to combine twotechniques to measure stress/strain distributions; One is an arthroscopicmeasurement of ligament’s deformation. The other is to introduce stress/straindistributions using the deformation data through the FEM analysis. The objectiveof this study was to establish the method to obtain the 3D deformations from thearthroscopic images. The endoscopic photos were converted into grey scaleimages, and the shape from shading method was used to generate the objects' 3Dshape from the images. Once the system was calibrated, a swine femur and tibiawere set in a special fixture, and the industrial endoscope was used to pictures ofthe anterior cruciate ligament (ACL) at various angles of knee flexion.Three-dimensional coordinates were obtained by the level set method from thebrightness data on the processed image and the three-dimensional shape of theACL surface was generated.

• 九州大学の論文
• 2006-03-23

著者

• Hirokawa Shunji

  Department Of Graphic Science Faculty Of Engineering Kyushu University

• SAKAGUCHI Junpei

  Department of Intelligent Machinery and Systems, Graduate School of Engineering, Kyushu University

• KATSUHARA Tadasuke

  Department of Intelligent Machinery and Systems, Graduate School of Engineering, Kyushu University

• Sakaguchi Junpei

  Department Of Intelligent Machinery And Systems Graduate School Of Engineering Kyushu University

• Katsuhara Tadasuke

  Department Of Intelligent Machinery And Systems Graduate School Of Engineering Kyushu University

• HIROKAWA Shunji

  Department of Arthroplasty, Faculty of Medicine, Saga University

関連論文

• Panoramic Measurement and Analysis of Strain Distribution in the Human ACL Using a Photoelastic Coating Method(Proceedings of the Switzerland-Japan Workshop on New Directions in Cellular and Tissue Biomechanics)(Special Issue on Bioengineering)
• Measurement/Analysis of Deformation and Strain Distribution of the Anterior Cruciate Ligament in the Human Knee
• Three-Dimensional Deformation and Stress Distribution of the Anterior Cruciate Ligament in the Knee : Results of Model Analyses and Visual Simulation
• Bioengineering Research on Frontier Technologies with Nano-, Micro- and Macro-scopic Multiple Viewpoints
• A 3D Kinematic Measurement of Knee Prosthesis Using X-ray Projection Images : Countermeasure to the Overlap between the Tibial and Femoral Silhouettes(Bioengineering)
• An Experimental Study of the Microstructures and Mechanical Properties of Swine Cruciate Ligaments(Bioengineering)
• A 3D Shape Reconstruction of Ligament from Arthroscopic Images
• Kinematic Measurement of Knee Prosthesis from Single-Plane Projection Images(Bioengineering)

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