A functional network estimation method of resting-state fMRI using a hierarchical Markov random field.
A functional network estimation method of resting-state fMRI using a hierarchical Markov random field.
复制标题
使用分层马尔可夫随机场的静止状态fMRI的功能网络估计方法。
DOI:
10.1016/j.neuroimage.2014.06.001
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发表时间:
2014-10-15
期刊:
影响因子:
5.7
通讯作者:
Fletcher PT
中科院分区:
文献类型:
--
作者:
Liu W;Awate SP;Anderson JS;Fletcher PT
We propose a hierarchical Markov random field model that estimates both group and subject functional networks simultaneously. The model takes into account the within-subject spatial coherence as well as the between-subject consistency of the network label maps. The statistical dependency between group and subject networks acts as a regularization, which helps the network estimation on both layers. We use Gibbs sampling to approximate the posterior density of the network labels and Monte Carlo expectation maximization to estimate the model parameters. We compare our method with two alternative segmentation methods based on K-Means and normalized cuts, using synthetic and real fMRI data. The experimental results show our proposed model is able to identify both group and subject functional networks with higher accuracy, more robustness, and inter-session consistency.
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DOI:
10.1109/acssc.2008.5074650
发表时间:
2008-10
期刊:
Conference record. Asilomar Conference on Signals, Systems & Computers
影响因子:
--
作者:
Golland P;Lashkari D;Venkataraman A
通讯作者:
Venkataraman A
影响因子:
5.7
作者:
Alexander-Bloch, Aaron;Lambiotte, Renaud;Roberts, Ben;Giedd, Jay;Gogtay, Nitin;Bullmore, Edward T.
通讯作者:
Bullmore, Edward T.
影响因子:
10.6
作者:
Bernard Ng;McKeown, Martin J.;Abugharbieh, Rafeef
通讯作者:
Abugharbieh, Rafeef
影响因子:
5.7
作者:
Beckmann, CF;Jenkinson, M;Smith, SM
通讯作者:
Smith, SM
DOI:
10.1073/pnas.0308627101
发表时间:
2004-03-30
影响因子:
11.1
作者:
Greicius, MD;Srivastava, G;Menon, V
通讯作者:
Menon, V