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Is H-MR spectroscopy useful as a diagnostic aid in MSA-C? | LitMetric

Is H-MR spectroscopy useful as a diagnostic aid in MSA-C?

Cerebellum Ataxias

Academic Unit of Radiology, C Floor, Royal Hallamshire Hospital, Glossop Road, Sheffield, S10 2JF UK.

Published: July 2019

AI Article Synopsis

Article Abstract

Background: Multiple system atrophy (MSA) is a sporadic adult-onset neurodegenerative disease with a cerebellar subtype where ataxic symptoms predominate (MSA-C) associated with autonomic dysfunction and a grave prognosis. The purpose of this analysis was to identify if cerebellar volumetry and MR spectroscopy obtained as part of routine clinical work up of patients with sporadic ataxia differentiates patients with multiple system atrophy- cerebellar type (MSA-C) from those with sporadic adult-onset ataxia of unknown etiology (SAOA) who's condition follows a more benign course.

Methods: Retrospective comparison was undertaken of 20 clinically probable or possible MSA-C patients, 20 age and sex matched patients with SAOA and 20 healthy control subjects. Single voxel H-MR spectroscopy of the cerebellar hemisphere and vermis and volumetric analysis of the cerebellum and brainstem were undertaken on baseline scans, comparing all groups.

Results: There was significant reduction in NAA/Cr levels in patients with MSA-C when compared to those with ISA ( = 0.005) and healthy controls ( < 0.001) in both the hemisphere and vermis. Brainstem volume was significantly reduced in MSA-C patients compared to SAOA patients ( < 0.001) and healthy controls ( < 0.001). There was no difference in cerebellar volume between MSA-C patients and SAOA patients.

Conclusion: This paper demonstrates that at presentation, MSA-C patients have a significant reduction of NAA/Cr in the cerebellum and significant decrease in brainstem volume when compared to SAOA and healthy controls. This is the first study to sucessfully show clinical utility of MR spectroscopy of the cerebellum for differentiating MSA-C from patients with SAOA.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6612153PMC
http://dx.doi.org/10.1186/s40673-019-0099-0DOI Listing

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