iMSTK-based Microwave Ablation Training System for Liver Tumors

Huiqi Tian, Mingwei Gao, Tianyu Fu, Jingfan Fan, Hong Song, Jian Yang
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Abstract

In this study, a training system was designed for liver tumor ablation based on iMSTK, a framework for the development of surgical simulation, to meet the training requirements of doctors for the microwave ablation surgery of liver tumors. Important organs such as the skin, bone, blood vessels, tumor, and liver were subjected to surface modeling and tetrahedral meshing. The constraint of the model based on position dynamics was added to the liver to simulate the flexible deformation of soft tissues under external forces. According to the Pennes bioheat equation, the release of the microwave ablation thermal field and the resulting ablation area were modeled. Then, a haptic device was combined to set different forces for various tissues and organs and simulate the force feedback effects of touching tissues and organs. Various modules were eventually coupled together to form a complete simulation system of liver tumor ablation. Results shown that the proposed training system could provide real and effective simulation for the microwave ablation of liver tumors. It also met the requirements for the preliminary training of doctors.
基于imstc的肝脏肿瘤微波消融培训系统
本研究基于iMSTK手术模拟开发框架,设计肝脏肿瘤消融培训系统,满足医生对肝脏肿瘤微波消融手术的培训需求。对皮肤、骨骼、血管、肿瘤和肝脏等重要器官进行了表面建模和四面体网格划分。在肝脏中加入了基于位置动力学的模型约束,模拟了肝脏软组织在外力作用下的柔性变形。根据Pennes生物热方程,对微波烧蚀热场的释放和烧蚀面积进行了建模。然后结合触觉装置对不同组织器官设置不同的力,模拟触摸组织器官的力反馈效果。各个模块最终耦合在一起,形成一个完整的肝脏肿瘤消融模拟系统。结果表明,该训练系统能够为肝脏肿瘤的微波消融提供真实有效的模拟。同时也满足了医生初级培训的要求。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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