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Neuroimaging after coma

Neuroimaging after coma Following coma, some patients will recover wakefulness without signs of consciousness (only showing reflex movements, i.e., the vegetative state) or may show non-reflex movements but remain without functional communication (i.e., the minimally conscious state). Currently, there remains a high rate of misdiagnosis of the vegetative state (Schnakers et. al. BMC Neurol, 9:35, 8) and the clinical and electrophysiological markers of outcome from the vegetative and minimally conscious states remain unsatisfactory. This should incite clinicians to use multimodal assessment to detect objective signs of consciousness and validate para-clinical prognostic markers in these challenging patients. This review will focus on advanced magnetic resonance imaging (MRI) techniques such as magnetic resonance spectroscopy, diffusion tensor imaging, and functional MRI (fMRI studies in both “activation” and “resting state” conditions) that were recently introduced in the assessment of patients with chronic disorders of consciousness. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Neuroradiology 0028-3940 Springer Journals

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References (95)

Publisher
Springer Journals
Copyright
Copyright © 2009 by Springer-Verlag
Subject
Medicine & Public Health; Neurosciences ; Neurosurgery ; Neurology ; Imaging / Radiology; Neuroradiology
ISSN
0028-3940
eISSN
1432-1920
DOI
10.1007/s00234-009-0614-8
pmid
19862509
Publisher site
See Article on Publisher Site

Abstract

Following coma, some patients will recover wakefulness without signs of consciousness (only showing reflex movements, i.e., the vegetative state) or may show non-reflex movements but remain without functional communication (i.e., the minimally conscious state). Currently, there remains a high rate of misdiagnosis of the vegetative state (Schnakers et. al. BMC Neurol, 9:35, 8) and the clinical and electrophysiological markers of outcome from the vegetative and minimally conscious states remain unsatisfactory. This should incite clinicians to use multimodal assessment to detect objective signs of consciousness and validate para-clinical prognostic markers in these challenging patients. This review will focus on advanced magnetic resonance imaging (MRI) techniques such as magnetic resonance spectroscopy, diffusion tensor imaging, and functional MRI (fMRI studies in both “activation” and “resting state” conditions) that were recently introduced in the assessment of patients with chronic disorders of consciousness.

Journal

Neuroradiology 0028-3940Springer Journals

Published: Oct 28, 2009

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