A novel quantitative cross-validation of different cortical surface reconstruction algorithms using MRI phantom
A novel quantitative cross-validation of different cortical surface reconstruction algorithms using MRI phantom
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DOI：
10.1016/j.neuroimage.2005.12.044
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发表时间：
2006-06-01
期刊：
影响因子：
5.7
通讯作者：
Kim, Sun I.
中科院分区：
文献类型：
--
作者：
Lee, Jun Ki;Lee, Jong-Min;Kim, Sun I.
皮层表面重建对于脑功能成像和脑皮层形态测量分析具有重要意义。已经开发了几种方法来忠实地重建表面模型，代表真正的皮质表面的几何形状和拓扑结构。然而，这些方法之间没有明确的比较研究，因为每种方法都有自己的程序，文件格式，坐标系和重建表面的使用。也没有明确的评价方法，除了目视检查，以验证定量的全皮质表面模型。在这项研究中，我们提出了一种新的基于体模的验证方法的皮质表面重建算法和定量交叉验证的三个最突出的皮质表面重建算法，分别用于Freesurfer，BrainVISA和CLASP。验证包括几何精度和网格特征，如欧拉数，分形维数（FD），总表面积，和点的局部密度。与Freesurfer和BrainVISA相比，CLASP显示出最佳的几何/拓扑精度和网格特征，例如FD和总表面积。在点的局部密度的验证中，与CLASP相比，Freesurfer和BrainVISA在皮质表面上显示出更均匀的点分布。(c)2006年爱思唯尔公司All rights reserved.
Cortical surface reconstruction is important for functional brain mapping and morphometric analysis of the brain cortex. Several methods have been developed for the faithful reconstruction of surface models which represent the true cortical surface in both geometry and topology. However, there has been no explicit comparison study among those methods because each method has its own procedures, file formats, coordinate systems, and use of the reconstructed surface. There has also been no explicit evaluation method except visual inspection to validate the whole-cortical surface models quantitatively. In this study, we presented a novel phantom-based validation method of the cortical surface reconstruction algorithm and quantitatively cross-validated the three most prominent cortical surface reconstruction algorithms which are used in Freesurfer, BrainVISA, and CLASP, respectively. The validation included geometrical accuracy and mesh characteristics such as Euler number, fractal dimension (FD), total surface area, and local density of points. CLASP showed the best geometric/topologic accuracy and mesh characteristics such as FD and total surface area compared to Freesurfer and BrainVISA. In the validation of local density of points, Freesurfer and BrainVISA showed more even distribution of points on the cortical surface compared to CLASP. (c) 2006 Elsevier Inc. All rights reserved.