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Abstract #1007

Quantitative Susceptibility of Subcortical Grey-Matter Regions in Early versus Refractory Focal Epilepsy

David N Vaughan1,2, Eric Y Pierre1, Marty Bryant1, David F Abbott1, Heath R Pardoe1, Warda T Syeda3, Bahman Tahayori1, Chris Tailby1,4, and Graeme D Jackson1,2
1Florey Institute of Neuroscience and Mental Health, Melbourne, Australia, 2Department of Neurology, Austin Health, Melbourne, Australia, 3Division of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, Australia, 4Department of Neuropsychology, Austin Health, Melbourne, Australia

Synopsis

Keywords: Epilepsy, Quantitative Susceptibility mappingMagnetic susceptibility of subcortical grey matter regions was assessed in participants of the Australian Epilepsy Project pilot study. Adults with medication-resistant focal epilepsy were compared to those with newly-diagnosed focal epilepsy, and to people with a single seizure but no epilepsy diagnosis. Basal ganglia, thalamus, hippocampi and amygdala showed susceptibility values consistent with published values, with a positive correlation to age seen at the basal ganglia. There was no significant difference in subcortical susceptibility between the groups. Although other brain network changes may progress with refractory seizures, mineralisation of subcortical regions appears generally stable over the course of focal epilepsy.

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