Three-dimensional reconstruction of femur based on Laplace operator and statistical shape model / 生物医学工程学杂志
Journal of Biomedical Engineering
; (6): 1168-1174, 2023.
Article
em Zh
| WPRIM
| ID: wpr-1008947
Biblioteca responsável:
WPRO
ABSTRACT
Reconstructing three-dimensional (3D) models from two-dimensional (2D) images is necessary for preoperative planning and the customization of joint prostheses. However, the traditional statistical modeling reconstruction shows a low accuracy due to limited 3D characteristics and information loss. In this study, we proposed a new method to reconstruct the 3D models of femoral images by combining a statistical shape model with Laplacian surface deformation, which greatly improved the accuracy of the reconstruction. In this method, a Laplace operator was introduced to represent the 3D model derived from the statistical shape model. By coordinate transformations in the Laplacian system, novel skeletal features were established and the model was accurately aligned with its 2D image. Finally, 50 femoral models were utilized to verify the effectiveness of this method. The results indicated that the precision of the method was improved by 16.8%-25.9% compared with the traditional statistical shape model reconstruction. Therefore, the method we proposed allows a more accurate 3D bone reconstruction, which facilitates the development of personalized prosthesis design, precise positioning, and quick biomechanical analysis.
Palavras-chave
Texto completo:
1
Índice:
WPRIM
Assunto principal:
Tomografia Computadorizada por Raios X
/
Modelos Estatísticos
/
Imageamento Tridimensional
/
Extremidade Inferior
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Fêmur
Idioma:
Zh
Revista:
Journal of Biomedical Engineering
Ano de publicação:
2023
Tipo de documento:
Article