A CONTINUOUS MIXTURE OF TENSORS MODEL FOR DIFFUSION-WEIGHTED MR SIGNAL RECONSTRUCTION.
A CONTINUOUS MIXTURE OF TENSORS MODEL FOR DIFFUSION-WEIGHTED MR SIGNAL RECONSTRUCTION.
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用于扩散加权 MR 信号重建的连续混合张量模型。
DOI:
10.1109/isbi.2007.356966
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发表时间:
2007
期刊:
影响因子:
--
通讯作者:
Mareci,Thomas
中科院分区:
文献类型:
--
作者:
Jian,Bing;Vemuri,BabaC;Ozarslan,Evren;Carney,Paul;Mareci,Thomas
Diffusion MRI is a non-invasive imaging technique that allows the measurement of water molecular diffusion through tissue in vivo. In this paper, we present a novel statistical model which describes the diffusion-attenuated MR signal by the Laplace transform of a probability distribution over symmetric positive definite matrices. Using this new model, we analytically derive a Rigaut-type asymptotic fractal law for the MR signal decay which has been phenomenologically used before. We also develop an efficient scheme for reconstructing the multiple fiber bundles from the DW-MRI measurements. Experimental results on both synthetic and real data sets are presented to show the robustness and accuracy of the proposed algorithms.
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