A visual MRI atrophy rating scale for the amyotrophic lateral sclerosis-frontotemporal dementia continuum

Ambikairajah, Ananthan, Devenney, Emma, Flanagan, Emma, Yew, Belinda, Mioshi, Eneida, Kiernan, Matthew C., Hodges, John R. and Hornberger, Michael (2014) A visual MRI atrophy rating scale for the amyotrophic lateral sclerosis-frontotemporal dementia continuum. Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration, 15 (3-4). pp. 226-234. ISSN 2167-8421

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Abstract

Our objective was to distinguish ALS, ALS-FTD and bvFTD via a novel visual MRI cortical atrophy scale that can be employed in a clinical setting. MRI images of 100 participants (33 ALS, 11 ALS-FTD, 22 bvFTD and 34 controls) were rated in four brain areas: orbitofrontal cortex, anterior temporal pole, anterior cingulate, and motor cortex. Areas were rated on a 5- point Likert scale by two raters blinded to the diagnosis. Results demonstrated that bvFTD patients showed the highest levels of atrophy across all regions, while ALS patients had the lowest atrophy scores. ALS-FTD patients have higher atrophy ratings compared to ALS patients for the motor cortex, anterior cingulate and anterior temporal lobe, with a statistical trend for the orbitofrontal cortex. ALS-FTD patients were not significantly different from bvFTD for any of the brain regions. These findings were confirmed in a post hoc VBM analysis of the same participants. Our study demonstrates that a simple visual MRI rating scale can reliably distinguish ALS, ALS-FTD and bvFTD atrophy patterns in a clinical setting. Motor cortex, anterior cingulate and anterior temporal atrophy emerged as good diagnostic markers for ALS-FTD. Employment of this MRI rating scale can complement clinical diagnostics of patients in the ALS-FTD continuum.

Item Type: Article
Uncontrolled Keywords: amyotrophic lateral sclerosis,frontotemporal dementia,mri,visual atrophy rating scale
Faculty \ School: Faculty of Medicine and Health Sciences > School of Health Sciences
Faculty of Medicine and Health Sciences > Norwich Medical School
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Depositing User: Pure Connector
Date Deposited: 04 Jan 2016 12:02
Last Modified: 31 Oct 2019 14:44
URI: https://ueaeprints.uea.ac.uk/id/eprint/55932
DOI: 10.3109/21678421.2014.880180

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