A Sketch-Based Interface for Modeling Myocardial Fiber Orientation that Considers the Layered Structure of the Ventricles
A Sketch-Based Interface for Modeling Myocardial Fiber Orientation that Considers the Layered Structure of the Ventricles
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DOI：
10.2170/physiolsci.rp008108
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发表时间：
2008-12-01
影响因子：
2.3
通讯作者：
Nakazawa, Kazuo
中科院分区：
文献类型：
--
作者：
Takayama, Kenshi;Ashiharaz, Takashi;Nakazawa, Kazuo
我们提出了一个基于草图的界面，用于模拟心脏，特别是心室电生理模拟中所需的心肌纤维取向。用户可以在两个步骤中创建表示心肌纤维取向的体积向量场。首先，定义三维(3D)心室模型上的深度场以创建心肌层。然后，用户可以剥离这些层并在其上绘制笔划，以指定每层中的心肌纤维方向。我们将三维脑室模型表示为四面体网格，并在网格顶点上进行拉普拉斯平滑，以内插用户绘制的笔划定义的矢量场。我们的方法还允许用户对心肌纤维取向的体积模型进行变形，这对于研究与形态异常相关的心脏病非常重要。我们创建了几个心肌纤维取向的例子，并将它们应用到一个简化的模拟器中，以演示我们方法的有效性。
We propose a sketch-based interface for modeling the myocardial fiber orientation required in the electrophysiological simulation of the heart, especially the ventricles. The user can create a volumetric vector field that represents the myocardial fiber orientation in two steps. First, a depth field over the three-dimensional (3D) ventricular model is defined to create layers of myocardium. The user can then peel these layers and draw strokes on them to specify the myocardial fiber orientation in each layer. We represent the 3D ventricular model as a tetrahedral mesh and perform Laplacian smoothing over the mesh vertices to interpolate the vector field defined by the user-drawn strokes. Our method also allows the user to perform deformations on volumetric models of myocardial fiber orientation, which is very important for studying heart disease associated with morphological abnormalities. We created several examples of myocardial fiber orientation and applied them to a simplified simulator to demonstrate the effectiveness of our method.