Abstract: Use enhanced 64-slice spiral CT as data input,do a study to building the haptic elastic model of complicated hepatobiliary.Make a summary of domestic and overseas study on soft-tissue modeling in recent years,explain the main flow and pivotal technique for building it.Give out the suitable methods in virtual hepatobiliary surgery,including geometry modeling,physical/ computational modeling,meshing,collision detection and Calculating method of real-time response based on PHANTOM force feedback device.Give out the relevant system frame and result.Set up a virtual environment developed under GHOST SDK ,and base a foundation for farther simulation in virtual hepatobiliary surgery.

Key words: 64-slice spiral CT, virtual hepatobiliary surgery, haptic elastic model

摘要： 利用增强的64排螺旋CT数据,对肝胆脏器进行了力觉弹性模型建模研究。总结了国内外近年来软组织建模的研究状况、主要流程和关键技术,给出了适合肝胆虚拟手术的几何建模、物理/计算建型、网格划分、碰撞检测及基于PHANTOM力反馈设备的实时响应计算方法。给出了相应的系统框架和结果,搭建了一个GHOST SDK下开发的虚拟环境,为肝胆虚拟手术进一步的仿真奠定了基础。

关键词: 64排螺旋CT, 肝胆虚拟手术, 力觉弹性模型