人体腹腔器官的三维重建与形变切割仿真  

3D Model Reconstruction,Deformation,and Cutting Simulation of Human Abdominal Organs

作　　者：李嘉冰 贾世宇 LI Jia-bing;JIA Shi-yu(College of Computer Science and Technology,Qingdao University,Qingdao 266071,China)

机构地区：[1]青岛大学计算机科学技术学院,青岛266071

出　　处：《青岛大学学报（自然科学版）》2024年第3期49-54,共6页Journal of Qingdao University(Natural Science Edition)

基　　金：山东省自然科学基金(批准号:ZR2020MF043)资助。

摘　　要：通过将传统面模型转换为体模型的方法,实现了包含肝脏、胃、结肠和胆囊等多个器官的人体腹腔结构的形变、切割与碰撞仿真。首先,以生理学腹腔解剖结构为依据对腹腔内各器官进行三维模型重建;然后,根据腹腔内各器官的生理位置和悬挂方式确定三维模型之间的相对位置,并设置合理的边界约束条件,将三维模型转换为基于体素的体模型;最后对体模型赋予生物力学性质并进行仿真。实验结果表明,该方法能够在保证仿真帧数较稳定的同时产生真实合理的形变、切割和碰撞仿真效果,并且在包含多个器官的情况下依然可以满足视觉实时性要求。By converting traditional surface models into body models,deformation,cutting,and collision simulation of human abdominal structures including multiple organs such as the liver,stomach,colon,and gallbladder were achieved.Firstly,based on the anatomical structure of the physiological abdominal cavity,3D model of various organs within the abdominal cavity were reconstructed.Then,based on the physiological positions and suspension methods of various organs in the abdominal cavity,determine the relative positions between the 3D model,and set reasonable boundary constraints on the 3D model.Next,converted the 3D model into a voxel based voxel model.Finally,the body model was endowed with biomechanical properties and simulated.The experimental results show that this method can generate realistic and reasonable deformation,cutting,and collision simulation effects while ensuring stable simulation frame rates,and can still meet the requirements of visual real-time performance even in the presence of multiple organs.

关 键 词：人体腹腔解剖 三维模型重建 虚拟手术仿真 软组织形变 软组织切割 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] R318.5[自动化与计算机技术—计算机科学与技术]