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Development and Testing of SPIDER-NET: An Interactive Tool for Brain Connectogram Visualization, Sub-Network

Davide Coluzzi¹, Alice Pirastru², Laura Pelizzari²

¹Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Milan, Italy.

Frontiers in Neuroscience

|April 4, 2022

Summary

SPIDER-NET offers an intuitive tool for visualizing brain networks and exploring sub-networks. This software effectively reveals connectivity differences in stroke patients, aiding in understanding brain injury impacts.

Keywords:

MRI brain connectivity brain networks connectograms graph analysis stroke

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Area of Science:

Neuroscience
Computational Biology
Medical Imaging

Background:

Brain connectomics models the brain as networks using connectivity matrices.
Current graphical representations (connectograms) lack user-friendly interfaces for sub-network exploration.
Existing tools hinder detailed analysis of specific brain regions.

Purpose of the Study:

Introduce SPIDER-NET, a novel software for generating connectograms and exploring brain sub-networks.
Demonstrate SPIDER-NET's utility in visualizing structural connectivity alterations post-stroke.
Evaluate the software's effectiveness in comparing patient and healthy control brain networks.

Main Methods:

Developed SPIDER-NET, an interactive tool for connectogram generation and sub-network analysis.
Investigated structural connectivity (SC) using Diffusion Tensor Imaging tractography in 17 healthy controls and two stroke patients.
Utilized Destrieux atlas for 165 parcel-based node definition and analyzed SC matrices with SPIDER-NET.

Main Results:

SPIDER-NET effectively visualized altered connectivity in stroke-affected hemispheres.
The tool enabled interactive extraction and analysis of stroke-affected sub-networks, revealing distinct patterns between stroke cases.
Graph-based metrics showed significant differences between stroke patients and healthy controls.

Conclusions:

SPIDER-NET provides an accessible, intuitive, and interactive platform for brain connectivity research.
The software offers both qualitative and quantitative insights into brain network alterations.
SPIDER-NET facilitates hypothesis testing and detailed sub-network analysis in neurological conditions.