Magnetic Resonance Diffusion Tensor Tractography by Searching for Minimum Curvature Deviation near Fiber Crossing Area
Magnetic Resonance Diffusion Tensor Tractography by Searching for Minimum Curvature Deviation near Fiber Crossing Area
复制标题
通过搜索纤维交叉区域附近的最小曲率偏差进行磁共振扩散张量纤维束成像
DOI：
10.1109/iccme.2012.6275690
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
小林哲生
中科院分区：
文献类型：
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作者：
山本詩子;阪上由英;笈田武範;小林哲生
近年来，磁共振弥散张量成像（MR-DTI）已被用于分析人脑白质结构和诊断疾病。使用MR-DTI的纤维跟踪和束状图技术为我们提供了有关神经纤维的信息，并允许我们诊断由于这些纤维异常引起的疾病。一般来说，神经束造影可以连续进行，不受神经纤维交叉的阻碍。当神经纤维确实与其他神经纤维交叉时，由于它们相互交叉区域的部分体积效应，很难追踪它们。在本文中，我们提出了一种新的纤维跟踪方法，该方法基于纤维交叉前后区域的轨迹来评估纤维交叉区域的曲率偏差。通过胼胝体对双侧视觉皮层的模拟图像对该方法的性能进行了测试。结果表明了该方法的有效性。
Recently, magnetic resonance diffusion tensor imaging (MR-DTI) has been used to analyze the structure of cerebral white matter and diagnose diseases in the human brain. Fiber tracking and tractography techniques using MR-DTI give us information regarding nerve fibers and allow us to diagnose disorders due to abnormalities in these fibers. In general, tractographies can be constructed continuously, unimpeded by the crossing of nerve fibers. When nerve fibers do cross over other nerve fibers, it is difficult to track them, due to the partial volume effect in the areas where they cross one another. In this paper, we propose a new method of fiber tracking that evaluates the deviation in the curvature of the areas of fiber crossing, which is based upon the trajectories of the areas before and after the where fibers crossed one another. The method's performance was tested using simulation images that illustrate the bilateral visual cortices through the corpus callosum. The results demonstrate the usefulness of the proposed method.