模板引导与数据驱动的三维碎骨修复方法

吉林大学学报(理学版) ›› 2021, Vol. 59 ›› Issue (2): 295-308.

模板引导与数据驱动的三维碎骨修复方法

蒋俊锋¹, 孙晓莉¹, 邓子越², 黄瑞¹, 何坤金¹, 陈正鸣¹, 刘宏伟³, 张文玺⁴

1. 河海大学物联网工程学院, 江苏常州 213022; 2. 河海大学计算机与信息学院, 南京 210024;
3. 南京医科大学附属常州第二人民医院, 江苏常州 213003; 4. 溧阳市人民医院, 江苏溧阳 213300

收稿日期:2020-09-01 出版日期:2021-03-26 发布日期:2021-03-26
通讯作者: 蒋俊锋 E-mail:jiangjf.hhu@gmail.com

Three-Dimensional Broken Bones Repair Method of Template-Guided and Data-Driven

JIANG Junfeng¹, SUN Xiaoli¹, DENG Ziyue², HUANG Rui¹, HE Kunjin¹, CHEN Zhengming¹, LIU Hongwei³, ZHANG Wenxi⁴

1.College of Internet of Things Engineering, Hohai University, Changzhou 213022, Jiangsu Province, China;
2. College of Computer and Information Science, Hohai University, Nanjing 210024, China; 3. Changzhou Second People’s Hospital Affiliated to Nanjing Medical University, Changzhou 213003, Jiangsu Province, China; 4. Liyang People’s Hospital, Liyang 213300, Jiangsu Province, China

Received:2020-09-01 Online:2021-03-26 Published:2021-03-26

摘要/Abstract

摘要： 针对骨折发生随机、相互接触碎骨的边界分割困难、小碎骨丢失导致碎骨拼接困难的问题, 提出一种基于模板引导与数据驱动的三维碎骨修复方法. 首先利用神经网络训练初步提取碎骨外表面, 并计算碎骨与模板外表面特征; 然后基于特征对每个碎骨外表面与骨骼模板进行匹配; 最后根据碎骨与模板间的距离和碎骨表面曲率信息确定断裂边界, 实现碎骨修复拼接. 实验结果表明, 该方法能有效进行碎骨分割与拼接, 分割精度达98.44%, 拼接平移误差为9.218 mm, 旋转误差为1.298°.

关键词: 计算机辅助术前规划, 骨折修复, 碎骨分割, 碎片拼接, 三维模型

Abstract: Aiming at the problems that the fracture occurred randomly, it was difficult to segment the boundary of the broken bone in contact with each other, and the loss of the small broken bone led to the difficulty of the broken bone splicing, we proposed a three-dimensional broken bone repair method based on template-guided and data-driven. Firstly, the neural network was used to train initially and extract the external surface of broken bone, and calculate the external surface features of the broken bone and the template. Secondly, based on the features, the external surface of each broken bone was matched with the bone template. Finally, the fracture boundary was determined according to the distance between the broken bone and the template and the curvature information of the broken bone surface, and the broken bone repair and splicing were realized.
The experimental results show that the method can effectively segment and splice the broken bone. The segmentation accuracy is 98.44%, the splicing translation error is 9.218 mm, and the splicing rotation error is 1.298°.

Key words: computer-aided pre-fracture planning, fracture repair, broken bone segmentation, broken bone splicing, 3D model

中图分类号:

TP391.41

蒋俊锋, 孙晓莉, 邓子越, 黄瑞, 何坤金, 陈正鸣, 刘宏伟, 张文玺. 模板引导与数据驱动的三维碎骨修复方法[J]. 吉林大学学报(理学版), 2021, 59(2): 295-308.

JIANG Junfeng, SUN Xiaoli, DENG Ziyue, HUANG Rui, HE Kunjin, CHEN Zhengming, LIU Hongwei, ZHANG Wenxi. Three-Dimensional Broken Bones Repair Method of Template-Guided and Data-Driven[J]. Journal of Jilin University Science Edition, 2021, 59(2): 295-308.