Flow-based Geometric Interpolation of Fiber Orientation Distribution Functions.
Flow-based Geometric Interpolation of Fiber Orientation Distribution Functions.
复制标题
纤维取向分布函数的基于流的几何插值。
DOI:
10.1007/978-3-031-43993-3_5
复制
发表时间:
2023
期刊:
影响因子:
--
通讯作者:
Shi,Yonggang
中科院分区:
文献类型:
--
作者:
Nie,Xinyu;Shi,Yonggang
The fiber orientation distribution function (FOD) is an advanced model for high angular resolution diffusion MRI representing complex fiber geometry. However, the complicated mathematical structures of the FOD function pose challenges for FOD image processing tasks such as interpolation, which plays a critical role in the propagation of fiber tracts in tractography. In FOD-based tractography, linear interpolation is commonly used for numerical efficiency, but it is prone to generate false artificial information, leading to anatomically incorrect fiber tracts. To overcome this difficulty, we propose a flow-based and geometrically consistent interpolation framework that considers peak-wise rotations of FODs within the neighborhood of each location. Our method decomposes a FOD function into multiple components and uses a smooth vector field to model the flows of each peak in its neighborhood. To generate the interpolated result along the flow of each vector field, we develop a closed-form and efficient method to rotate FOD peaks in neighboring voxels and realize geometrically consistent interpolation of FOD components. By combining the interpolation results from each peak, we obtain the final interpolation of FODs. Experimental results on Human Connectome Project (HCP) data demonstrate that our method produces anatomically more meaningful FOD interpolations and significantly enhances tractography performance.
登录
查看更多内容
DOI:
10.4028/www.scientific.net/msf.631-632.65
发表时间:
2009
期刊:
Materials Science Forum
影响因子:
--
作者:
C.M.R. Dias;H. Savastano;M. Taqueda;V. John
通讯作者:
V. John
影响因子:
10.5
作者:
P. Stroeven;J. Hu
通讯作者:
P. Stroeven;J. Hu
DOI:
10.1063/1.2896834
发表时间:
2008-02
期刊:
--
影响因子:
--
作者:
C.M.R. Dias;H. Savastano;V. John
通讯作者:
C.M.R. Dias;H. Savastano;V. John
DOI:
10.4028/www.scientific.net/msf.423-425.17
发表时间:
2003
期刊:
Materials Science Forum
影响因子:
--
作者:
M. Gasik
通讯作者:
M. Gasik
DOI:
10.1016/0010-4361(88)90724-0
发表时间:
1988
期刊:
Composites
影响因子:
--
作者:
A. Baroonian;J. G. Keer
通讯作者:
J. G. Keer