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Cerebral Ischemic Coma Model Induced by Modified Four-Vessel Occlusion

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Global Functional Disconnections in Post-anoxic Coma Patient.

S Achard¹, S Kremer, M Schenck

¹Grenoble Image Parole Signal Automatique, Centre National de la Recherche Scientifique; Grenoble, France - sophie.achard@gipsa-lab.inpg.fr.

The Neuroradiology Journal

|September 25, 2013

Summary

This summary is machine-generated.

Resting-state functional MRI reveals brain network disconnections in patients with disorders of consciousness. This neuroimaging approach shows potential for early diagnosis of vegetative states after brain injury.

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Area of Science:

Neuroscience
Medical Imaging
Neurology

Background:

Disorders of consciousness are often linked to brain network disconnection.
Neuroimaging techniques like PET and fMRI have been used to assess these patterns.

Purpose of the Study:

To investigate the global residual connection pattern in a patient with disorders of consciousness after post-anoxic injury.
To compare the patient's brain network connectivity with that of healthy controls.

Main Methods:

Resting-state functional MRI (fMRI) acquisition.
Functional connectivity analysis using brain network graphs.
Comparison of patient data with a control group of twenty individuals.

Main Results:

The patient exhibited multiple disconnections in both primary and high-order associative brain areas.
The observed disconnection pattern aligns with characteristics of a vegetative state.
Findings were consistent with data from PET, fMRI, and electrophysiology (EP).

Conclusions:

Graph-based functional connectivity analysis of resting-state fMRI is a promising tool for diagnosing disorders of consciousness.
This method offers potential for early and accurate diagnosis following hypoxic-anoxic brain injury.