冠心病介入治疗虚拟仿真系统关键技术

Key techniques for percutaneous coronary intervention virtual simulation system about coronary heart disease

冠心病介入治疗虚拟仿真系统是训练介入医生手术技能的有效工具,为满足实际需求,对系统开发过程中涉及的几何建模、心跳模拟、流体仿真、柔性器械运动处理等关键技术进行了探讨,提出了基于NURBS曲面的血管模型和组合弹簧振子联动的心跳模型,并利用粒子系统和多叉树方法实现了造影剂注射和柔性器械运动的仿真,为冠心病介入治疗训练提供了虚拟教学平台和技术支撑。

The pereutaneous coronary intervention virtual simulation system about coronary heart disease is one of the important tools for medical intervention training. To satisfy the clinical training needs, the key techniques about geometry modeling, heartbeat simulation, liquid simulation and flexible instrument movement processing in systerm development were discussed. A blood vessel model based on NURBS surface and a heartbeat model based on a combined mass-spring were proposed. Contrast media injection and flexible instrument movement were realized by the particle systerm and the multi-branch tree method. A simulation platform and technology support was supplied for percutaneous coronary intervention training.