Reconstruction of patient-specific femurs using X-ray and sparse CT images

Authors:
Kyung Koh;Yoon Hyuk Kim;Kyungsoo Kim;Won Man Park
Affiliations:
Department of Mechanical Engineering, Kyung Hee University, Yongin, Republic of Korea;Department of Mechanical Engineering, Kyung Hee University, Yongin, Republic of Korea and e-Spine Center, Industrial Liaison Research Institute, Kyung Hee University, Yongin, Republic of Korea;Department of Mathematics, Kyonggi University, Suwon, Republic of Korea;Department of Mechanical Engineering, Kyung Hee University, Yongin, Republic of Korea
Venue:
Computers in Biology and Medicine
Year:
2011

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Abstract

Three-dimensional patient-specific bone models have been used in computer-aided planning and biomechanical analysis of orthopaedic surgeries. Reconstruction methods using X-ray images have been developed recently. However, these reconstruction methods have limited ability to generate femur models with severe rotational deformities. In this study, a new X-ray-based reconstruction method was proposed using the free form deformation method with two X-ray images and three CT images. The obtained femur model is closer to a CT-based 3D femur model in comparison with the reconstruction method using only X-ray images. This method will have benefits for many clinical and biomechanical applications.