The brain imaging community is greatly benefiting from extensive data sharing efforts currently underway. However, there is a significant gap in existing strategies which focus on anonymized, post-hoc sharing of either 1) full raw or preprocessed data [in the case of open studies] or 2) manually computed summary measures [such as hippocampal volume, in the case of closed (or not yet shared) studies] which we propose to address. Current approaches to data sharing often include significant logistical hurdles both for the investigator sharing the dat as well as for the individual requesting the data (e.g. often times multiple data sharing agreements and approvals are required from US and international institutions). This needs to change, so that the scientific community becomes a venue where data can be collected, managed, widely shared and analyzed while also opening up access to the (many) data sets which are not currently available (see recent overview on this from our group). The large amount of existing data requires an approach that can analyze data in a distributed way while also leaving control of the source data with the individual investigator; this motivates dynamic, decentralized way of approaching large scale analyses. We are proposing a peer-to-peer system called the Collaborative Informatics and Neuroimaging Suite Toolkit for Anonymous Computation (COINSTAC). The system will provide an independent, open, no-strings-attached tool that performs analysis on datasets distributed across different locations. Thus, the step of actually aggregating data can be avoided, while the strength of large-scale analyses can be retained. To achieve this, in Aim 1, the uniform data interfaces that we propose will make it easy to share and cooperate. Robust and novel quality assurance and replicability tools will also be incorporated. Collaboration and data sharing will be done through forming temporary (need and project-based) virtual clusters of studies performing automatically generated local computation on their respective data and aggregating statistics in global inference procedures. The communal organization will provide a continuous stream of large scale projects that can be formed and completed without the need of creating new rigid organizations or project-oriented storage vaults.
In Aim 2, we develop, evaluate, and incorporate privacy-preserving algorithms to ensure that the data used are not re-identifiable even with multiple re-uses. We also will develop advanced distributed and privacy preserving approaches for several key multivariate families of algorithms (general linear model, matrix factorization [e.g. independent component analysis], classification) to estimate intrinsic networks and perform data fusion. Finally, in Aim 3, we will demonstrate the utility of this approach in a proof of concept study through distributed analyses of substance abuse datasets across national and international venues with multiple imaging modalities.

Public Health Relevance

Hundreds of millions of dollars have been spent to collect human neuroimaging data for clinical and research purposes, many of which don't have data sharing agreements or collect sensitive data which are not easily shared, such as genetics. Opportunities for large scale aggregated analyses to infer health-relevant facts create new challenges in protecting the privacy of individuals' data. Open sharing of raw data, though desirable from the research perspective, and growing rapidly, is not a good solution for a large number of datasets which have additional privacy risks or IRB concerns. The COINSTAC solution we are proposing will capture this 'missing data' and allow for pooling of both open and 'closed' repositories by developing privacy preserving versions of widely-used algorithms and incorporating within an easy-to-use platform which enables distributed computation. In addition, COINSTAC will accelerate research on both open and closed data by offering a distributed computational solution for a large toolkit of widely used algorithms.

Agency
National Institute of Health (NIH)
Institute
National Institute on Drug Abuse (NIDA)
Type
Research Project (R01)
Project #
7R01DA040487-05
Application #
9938885
Study Section
Neuroscience and Ophthalmic Imaging Technologies Study Section (NOIT)
Program Officer
Pariyadath, Vani
Project Start
2019-06-01
Project End
2020-04-30
Budget Start
2019-06-01
Budget End
2020-04-30
Support Year
5
Fiscal Year
2019
Total Cost
Indirect Cost
Name
Georgia State University
Department
Miscellaneous
Type
Organized Research Units
DUNS #
837322494
City
Atlanta
State
GA
Country
United States
Zip Code
30302
Vergara, Victor M; Weiland, Barbara J; Hutchison, Kent E et al. (2018) The Impact of Combinations of Alcohol, Nicotine, and Cannabis on Dynamic Brain Connectivity. Neuropsychopharmacology 43:877-890
Miller, Robyn L; Abrol, Anees; Adali, Tulay et al. (2018) Resting-State fMRI Dynamics and Null Models: Perspectives, Sampling Variability, and Simulations. Front Neurosci 12:551
Wilcox, Claire E; Claus, Eric D; Calhoun, Vince D et al. (2018) Default mode network deactivation to smoking cue relative to food cue predicts treatment outcome in nicotine use disorder. Addict Biol 23:412-424
Yu, Qingbao; Du, Yuhui; Chen, Jiayu et al. (2018) Application of Graph Theory to Assess Static and Dynamic Brain Connectivity: Approaches for Building Brain Graphs. Proc IEEE Inst Electr Electron Eng 106:886-906
Steele, Vaughn R; Maurer, J Michael; Arbabshirani, Mohammad R et al. (2018) Machine Learning of Functional Magnetic Resonance Imaging Network Connectivity Predicts Substance Abuse Treatment Completion. Biol Psychiatry Cogn Neurosci Neuroimaging 3:141-149
Yaesoubi, Maziar; Adal?, Tülay; Calhoun, Vince D (2018) A window-less approach for capturing time-varying connectivity in fMRI data reveals the presence of states with variable rates of change. Hum Brain Mapp 39:1626-1636
Faghiri, Ashkan; Stephen, Julia M; Wang, Yu-Ping et al. (2018) Changing brain connectivity dynamics: From early childhood to adulthood. Hum Brain Mapp 39:1108-1117
Yu, Qingbao; Du, Yuhui; Chen, Jiayu et al. (2017) Comparing brain graphs in which nodes are regions of interest or independent components: A simulation study. J Neurosci Methods 291:61-68
Ming, Jing; Verner, Eric; Sarwate, Anand et al. (2017) COINSTAC: Decentralizing the future of brain imaging analysis. F1000Res 6:1512
Vergara, Victor M; Liu, Jingyu; Claus, Eric D et al. (2017) Alterations of resting state functional network connectivity in the brain of nicotine and alcohol users. Neuroimage 151:45-54

Showing the most recent 10 out of 28 publications