Author

Helen Petropoulos

Georgia Institute of Technology

Listed by name: these papers carry no ORCID for this author, so different people with the same name may be mixed together.

Biology Disciplines

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Neuroscience· 2

Signature Assays, Organisms & Methods

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Organism:human· 2 Assay:imaging· 2 Approach:statistical model· 2 Research Focus:cell type annotation· 1 Research Focus:cell-cell communication· 1 Research Focus:clustering· 1 Research Focus:differential expression· 1 Research Focus:spatial domain detection· 1

Frequent Co-Authors

Armin IrajiiD· 2 shared Cyrus EierudiD· 2 shared Vince D. CalhouniD· 2 shared Allan I. LeveyiD· 1 shared Alzheimer’s Disease Neuroimaging Initiative· 1 shared Barbara BorroniiD· 1 shared Cyril R PernetiD· 1 shared Enrico PremiiD· 1 shared

Activity by Year

2025-2025 · peak 2/yr

Co-Author Collaboration Network

10 top collaborators · 33 mutual co-author links

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2 shared papersNeuroscience

Armin IrajiORCID

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2 papers

Recent·Most cited

Building Multivariate Molecular Imaging Brain Atlases Using the NeuroMark PET Independent Component Analysis Framework

Cyrus Eierud, Martin Nørgaard, Murat Bilgel, Helen Petropoulos, Zening Fu, Armin Iraji, Granville James Matheson, Melanie Ganz, Cyril R Pernet, Vince D. Calhoun, Alzheimer’s Disease Neuroimaging Initiative

The paper introduces NeuroMark PET, an automated framework using spatially constrained ICA to identify Aβ networks in PET data, showing higher sensitivity for age-related changes compared to traditional ROIs.

Aperture Neuro · Aug 8, 2025Peer-reviewedNeuroscience

Mapping Amyloid Networks in Alzheimer's Disease: A High-Order ICA Approach to Gray and White Matter Pathology

Nigar Khasayeva, Kyle M. Jensen, Cyrus Eierud, Helen Petropoulos, Allan I. Levey, James J. Lah, Ruiyan Luo, Enrico Premi, Barbara Borroni, Jiayu Chen, Vince D. Calhoun, Armin Iraji

This study uses high-order ICA on PET scans to identify amyloid-beta networks in Alzheimer's Disease, revealing distinct gray and white matter patterns associated with cognitive impairment.

bioRxiv · Mar 21, 2025 · PreprintNeuroscience