Mechanical modeling of a beating heart for a cardiac palpation training system
Mechanical modeling of a beating heart for a cardiac palpation training system
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用于心脏触诊训练系统的跳动心脏的机械建模
DOI：
10.1163/15685530360675497
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发表时间：
2003
影响因子：
2
通讯作者：
M. Komeda
中科院分区：
文献类型：
--
作者：
T. Tokuyasu;S. Oota;T. Tokuyama;K. Asami;T. Kitamura;G. Sakaguchi;T. Koyama;M. Komeda
在心脏整形手术中，心脏外科医生触摸心肌以诊断患者的心脏可能由于梗塞或扩张性心肌病而患病，以确定需要整形手术的区域。换句话说，心脏外科医生需要通过他/她的指尖的触觉灵敏度来识别薄肌肉区域的机械特性。在心脏手术前可用的心脏图像可以实现对患者心脏的定性估计。然而，心脏触诊是唯一准确的方法，使手术计划的心室整形手术在手术室。由于缺乏经验的年轻心脏外科医生很少有机会进行心脏触诊，即使在手术病例中，也非常需要心脏触诊训练系统。心脏触诊系统的训练系统，我们已经开发的虚拟心脏的基础上，人类左心室磁共振图像和一维机械手作为触觉设备。将猪和狗的心肌的机械特性嵌入到与体循环的Windkessel模型相关联的虚拟心脏中。实验表明，所开发的训练系统能够使用户通过机械手实时感受到心肌壁的弹性。
In cardiac plastic surgery, the cardiac surgeon touches the cardiac muscle to diagnose the patient's heart that may be diseased due to infarction or dilate cardiomyopathy to determine the regions where it needs plastic surgery. In other words, the cardiac surgeon needs to recognize the mechanical characteristics of the thin muscle regions by the haptic sensitivity of his/her fingertips. Cardiac images available before cardiac surgery could enable a qualitative estimation of the patient's heart. However, cardiac palpation is the only accurate way for making surgical plans for ventricular plastic surgery in the operating theater. Since young inexperienced cardiac surgeons have few occasions to perform cardiac palpation, even in operation cases, a cardiac palpation training system is highly desired. The training system for a cardiac palpation system we have developed consists of a virtual heart based on human left ventricular magnetic resonance images and a one-dimensional manipulator as a haptic device. Mechanical properties of the cardiac muscles of a pig and a dog are embedded into the virtual heart linked to a Windkessel model for the systemic circulation. Our experiments show that the developed training system enables users to feel the elasticity of the cardiac muscle wall through the manipulator in real-time.