Niethammer Marc, Bouix Sylvain, Westin Carl-Fredrik, Shenton Martha E
Psychiatry Neuroimaging Laboratory, Brigham and Women's Hospital, Harvard Medical School, Boston MA, USA.
Med Image Comput Comput Assist Interv. 2006;9(Pt 2):252-9. doi: 10.1007/11866763_31.
Individual white matter fibers cannot be resolved by current magnetic resonance (MR) technology. Many fibers of a fiber bundle will pass through an individual volume element (voxel). Individual visualized fiber tracts are thus the result of interpolation on a relatively coarse voxel grid, and an infinite number of them may be generated in a given volume by interpolation. This paper aims at creating a level set representation of a fiber bundle to describe this apparent continuum of fibers. It further introduces a coordinate system warped to the fiber bundle geometry, allowing for the definition of geometrically meaningful fiber bundle measures.
目前的磁共振（MR）技术无法分辨单个白质纤维。纤维束中的许多纤维会穿过单个体素。因此，可视化的单个纤维束是在相对粗糙的体素网格上进行插值的结果，并且通过插值在给定体积中可能会生成无数个纤维束。本文旨在创建纤维束的水平集表示，以描述这种明显的纤维连续体。它还引入了一个根据纤维束几何形状变形的坐标系，从而能够定义具有几何意义的纤维束度量。
