Real-time guidewire simulation in complex vascular models
Real-time guidewire simulation in complex vascular models
复制标题
DOI：
10.1007/s00371-009-0312-x
复制
发表时间：
2009-09-01
期刊：
影响因子：
3.5
通讯作者：
Bello, Fernando
中科院分区：
文献类型：
--
作者：
Luboz, Vincent;Blazewski, Rafal;Bello, Fernando
所有介入放射学培训的基础是发展操作仪器的核心技能。计算机模拟器正在出现，以帮助完成这项任务。本文用更逼真的仪器行为和更复杂的血管模型扩展了我们以前的框架。该仪器被建模为混合质量-弹簧粒子系统，而血管系统是从患者数据集分割的三角曲面网格。一种特别设计的商业触觉设备允许受训者使用真实的仪器来指导模拟，通过从23名不同患者的数据库中选择的血管系统。一种新的碰撞检测算法允许高效地计算接触，从而留出更多的时间来处理实时真实模拟的碰撞响应。我们的模拟仪器的性能已经与真实的仪器进行了直观的比较，并由经验丰富的介入放射科医生进行了评估。初步结果显示出密切的相关性和现实的行为。
The base of all training in interventional radiology aims at the development of the core skills in manipulating the instruments. Computer simulators are emerging to help in this task. This paper extends our previous framework with more realistic instrument behaviour and more complex vascular models. The instrument is modelled as a hybrid mass-spring particle system while the vasculature is a triangulated surface mesh segmented from patient data sets. A specially designed commercial haptic device allows the trainee to use real instruments to guide the simulation through the vasculature selected from a database of 23 different patients. A new collision detection algorithm allows an efficient computation of the contacts, therefore leaving more time to deal with the collision response for a realistic simulation in real time. The behaviour of our simulated instruments has been visually compared with the real ones and assessed by experienced interventional radiologists. Preliminary results show close correlations and a realistic behaviour.