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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

PDF

750

被引次数

3

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)

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