Decentralized Analysis of Brain Imaging Data: Voxel-Based Morphometry and Dynamic Functional Network Connectivity.

Decentralized Analysis of Brain Imaging Data: Voxel-Based Morphometry and Dynamic Functional Network Connectivity.
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DOI:
10.3389/fninf.2018.00055
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发表时间:
2018
影响因子:
3.5
通讯作者:
Calhoun VD
Calhoun VD
中科院分区:
医学3区
文献类型:
--
作者:
Gazula H;Baker BT;Damaraju E;Plis SM;Panta SR;Silva RF;Calhoun VD

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在神经影像学领域,人们对开发协作框架越来越感兴趣,这些框架使研究人员能够通过利用世界各地多个站点的数据来解决有关人类大脑的挑战性问题。此外,还致力于开发算法,以实现从多个站点进行协作分析和特征学习,而不需要将通常的大型数据集中定位。在本文中,我们提出了两个新的分散算法:(1)一个分散的回归算法进行基于体素的形态学分析的结构磁共振成像(MRI)数据,(2)一个分散的动态功能网络连接算法,其中包括分散组伊卡和滑动窗口分析的功能MRI数据。我们将结果与从相同数据的合并(或集中)对应方获得的结果进行比较,即,就像他们在一个地方。去中心化算法产生的结果与池化情况相似,并展示了对位于多个地点的数据进行多体素和多变量分析的潜力。这种方法使得在大规模神经影像学研究的背景下进行更多的合作和比较分析成为可能。
In the field of neuroimaging, there is a growing interest in developing collaborative frameworks that enable researchers to address challenging questions about the human brain by leveraging data across multiple sites all over the world. Additionally, efforts are also being directed at developing algorithms that enable collaborative analysis and feature learning from multiple sites without requiring the often large data to be centrally located. In this paper, we propose two new decentralized algorithms: (1) A decentralized regression algorithm for performing a voxel-based morphometry analysis on structural magnetic resonance imaging (MRI) data and, (2) A decentralized dynamic functional network connectivity algorithm which includes decentralized group ICA and sliding-window analysis of functional MRI data. We compare results against those obtained from their pooled (or centralized) counterparts on the same data i.e., as if they are at one site. Results produced by the decentralized algorithms are similar to the pooled-case and showcase the potential of performing multi-voxel and multivariate analyses of data located at multiple sites. Such approaches enable many more collaborative and comparative analysis in the context of large-scale neuroimaging studies.
DOI: 10.1523/jneurosci.1091-13.2013
发表时间: 2013-07-03
影响因子: 5.3
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