计算机工程 ›› 2012, Vol. 38 ›› Issue (19): 281-284,289.doi: 10.3969/j.issn.1000-3428.2012.19.072

• 开发研究与设计技术 • 上一篇    下一篇

虚拟肩关节镜手术中软组织形变的模拟

黄 敏1a,1b,王金武2,3,顾力栩1b,4,周 喆4,陆文龙4   

  1. (1. 上海交通大学 a. 数字医学教育部工程研究中心;b. 生物医学工程研究院,上海 200030; 2. 上海交通大学医学院附属第九人民医院骨科,上海 200011;3. 上海市骨科内植物重点实验室,上海 200011; 4. 上海交通大学软件学院,上海 200240)
  • 收稿日期:2011-12-19 出版日期:2012-10-05 发布日期:2012-09-29
  • 作者简介:黄 敏(1988-),女,硕士,主研方向:虚拟现实,图像处理;王金武,副教授、博士;顾力栩,教授、博士;周 喆,硕士;陆文龙,学士
  • 基金项目:
    国家自然科学基金资助项目(81171707);国家重大科学研究计划基金资助项目(2012CB933604);上海市教委重点学科研究基金资助项目(J50206);上海市浦江人才计划(D类)基金资助项目(11PJD016)

Simulation of Soft Tissue Deformation in Virtual Shoulder Arthroscopy Surgery

HUANG Min 1a,1b, WANG Jin-wu 2,3, GU Li-xu 1b,4, ZHOU Zhe 4, LU Wen-long 4   

  1. (1a. Engineering Research Center of Digital Medicine, Ministry of Education; 1b. School of Biomedical Engineering, Shanghai Jiaotong University, Shanghai 200030, China; 2. Orthopaedics, Shanghai Ninth People’s Hospital Affiliated Shanghai Jiaotong University School of Medicine, Shanghai 200011, China; 3. Shanghai Key Laboratory of Orthopaedic Implant, Shanghai 200011, China; 4. School of Software, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2011-12-19 Online:2012-10-05 Published:2012-09-29

摘要: 为实现虚拟肩关节镜手术中软组织的形变模拟,提出一种改进的质点-弹簧模型。通过自适应采样及K阶最邻近节点快速查询算法,建立表面质点密度高而中心质点密度低的拓扑结构模型,在传统质点-弹簧形变模型的基础上,增加防止弹簧翻转的复原力,采用计算统一设备构架实现图形处理器的加速。模拟结果表明,该模型能够实现较真实的形变模拟。

关键词: 软组织形变, 虚拟手术, 肩关节镜手术, 质点-弹簧形变模型, 几何拓扑结构, 图形处理单元

Abstract: In order to realize the deformation simulation of soft tissue in the virtual arthroscopic shoulder surgery, this paper proposes an improved mass-spring model. Adaptive sampling method and K-nearest Neighbor(KNN) rapid inquiry algorithm are provided to establish a topological structure model with high particle density in the surface and low particle density in the center. It adds the restoration force to the traditional mass-spring model to make the deformation look more realistic, and uses the calculated unity equipment structure to achieve Graphic Processing Unit(GPU) acceleration. Simulation results show that the model can achieve a realistic simulation of deformation.

Key words: soft tissue deformation, virtual surgery, shoulder arthroscopy surgery, mass-spring deformation model, geometry topology structure, Graphic Processing Unit(GPU)

中图分类号: