DT-MRI数据集的一种拓扑可视化方法

Topological Visualization Method for DT-MRI Dataset

引入了扩散张量磁共振数据集的拓扑可视化方法.将扩散张量磁共振薄层的3D扩散张量投影为2D,仅考虑平面内的扩散.对这个2D张量场进行拓扑分析,提取出对应的拓扑结构.矢冠轴位上的胼胝体、丘脑等脑组织拓扑结果表明,拓扑方法可以精确且综合地表现出脑组织的根本结构.与简单的纤维跟踪相比,基于拓扑的可视化结果更加清晰,用简单的点和线表示扩散张量场的复杂结构,能够突出场的连通性.

A topological visualization method for DT-MRI dataset is introduced. The 3D diffusion tensor is projected onto a two-dimensional slice plane, and the in-plane diffusion is considered. By topology analysis, the topological structure of the corresponding diffusion tensor field is extracted. Topological features of cerebral tissue such as corpus callosum and thalamencephalon, detected in the horizontal, coronal and sagittal plane, indicate that the topological method provides an accurate and synthetic depiction of the underlying framework. Compared with simple fiber tracking, the topology-based visualization represents complex structure by simple points and lines, resulting in a clearer description. Connectivity of field can also be dramatically enhanced.