Automatic Outer Surface Extraction of Femoral Head in CT Images

doi:10.1007/s12204-017-1847-z

上海交通大学学报（英文版） ›› 2017, Vol. 22 ›› Issue (3): 377-384.doi: 10.1007/s12204-017-1847-z

• • 上一篇

Automatic Outer Surface Extraction of Femoral Head in CT Images

WAN Daqian1 (万大千), WANG Dong2 (王东), MA Anbang4 (马安邦),DAI Kerong2,4 (戴尅戎), AI Songtao3* (艾松涛), WANG Liao2* (王燎)

(1. Department of Orthopedics, Orthopedic Institute of Harbin, The Fifth Hospital in Harbin, Harbin 150040, China; 2. Department of Orthopedics, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China; 3. Department of Radiology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China; 4. School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, China)

出版日期:2017-06-02 发布日期:2017-06-04
通讯作者: AI Songtao(艾松涛), WANG Liao(王燎) E-mail:aistss1024@gmail.com, wangliao1881@163.com

Automatic Outer Surface Extraction of Femoral Head in CT Images

WAN Daqian1 (万大千), WANG Dong2 (王东), MA Anbang4 (马安邦),DAI Kerong2,4 (戴尅戎), AI Songtao3* (艾松涛), WANG Liao2* (王燎)

(1. Department of Orthopedics, Orthopedic Institute of Harbin, The Fifth Hospital in Harbin, Harbin 150040, China; 2. Department of Orthopedics, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China; 3. Department of Radiology, Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China; 4. School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, China)

Online:2017-06-02 Published:2017-06-04
Contact: AI Songtao(艾松涛), WANG Liao(王燎) E-mail:aistss1024@gmail.com, wangliao1881@163.com

摘要/Abstract

摘要： Computer-aided hip surgery planning and implant design applications require accurate segmentation of femoral head and proximal acetabulum. An accurate outer surface extraction of femoral head using marching cubes algorithm remains challenging due to deformed shapes and extremely narrow inter-bone regions. In this paper, we present an automatic and fast approach for segmentation of femoral head and proximal acetabulum which leads to accurate and compact representation of femoral head using marching cubes algorithm. At first, valley-emphasized images are constructed from original images so that valleys stand out in high relief. Otsu’s multiple thresholding technique is applied to seperate the images into bone and non-bone classes. Region growing method and threedimensional (3D) morphological operations are performed to fill holes in the bone. In the reclassification process, the bone regions are further segmented, and the boundaries of the bone regions are further refined based on Bayes decision rule. Finally, marching cubes algorithm is applied to reconstruct a 3D model and extract the outer surface of femoral head and proximal acetabulum. Experimental results show that this method is an accurate segmentation technique for femoral head and proximal acetabulum and it can be applied as a tool in medical practice.

关键词: hip joint, segmentation, three-dimensional (3D) reconstruction

Abstract: Computer-aided hip surgery planning and implant design applications require accurate segmentation of femoral head and proximal acetabulum. An accurate outer surface extraction of femoral head using marching cubes algorithm remains challenging due to deformed shapes and extremely narrow inter-bone regions. In this paper, we present an automatic and fast approach for segmentation of femoral head and proximal acetabulum which leads to accurate and compact representation of femoral head using marching cubes algorithm. At first, valley-emphasized images are constructed from original images so that valleys stand out in high relief. Otsu’s multiple thresholding technique is applied to seperate the images into bone and non-bone classes. Region growing method and threedimensional (3D) morphological operations are performed to fill holes in the bone. In the reclassification process, the bone regions are further segmented, and the boundaries of the bone regions are further refined based on Bayes decision rule. Finally, marching cubes algorithm is applied to reconstruct a 3D model and extract the outer surface of femoral head and proximal acetabulum. Experimental results show that this method is an accurate segmentation technique for femoral head and proximal acetabulum and it can be applied as a tool in medical practice.

Key words: hip joint, segmentation, three-dimensional (3D) reconstruction

中图分类号:

R 318

WAN Daqian1 (万大千), WANG Dong2 (王东), MA Anbang4 (马安邦),DAI Kerong2,4 (戴尅戎), AI Son. Automatic Outer Surface Extraction of Femoral Head in CT Images[J]. 上海交通大学学报（英文版）, 2017, 22(3): 377-384.

WAN Daqian1 (万大千), WANG Dong2 (王东), MA Anbang4 (马安邦),DAI Kerong2,4 (戴尅戎), AI Songtao3* (艾松涛), WANG Liao2* (王燎). Automatic Outer Surface Extraction of Femoral Head in CT Images[J]. Journal of shanghai Jiaotong University (Science), 2017, 22(3): 377-384.

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Automatic Outer Surface Extraction of Femoral Head in CT Images

Automatic Outer Surface Extraction of Femoral Head in CT Images

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