MR spectroscopy and atrophy in Gluten, Friedreich's and SCA6 ataxias.

06:00 EST 11th November 2011 | BioPortfolio

Summary of "MR spectroscopy and atrophy in Gluten, Friedreich's and SCA6 ataxias."

Hadjivassiliou M, Wallis LI, Hoggard N, Grünewald RA, Griffiths PD, Wilkinson ID. MR spectroscopy and atrophy in Gluten, Friedreich's and SCA6 ataxias. Acta Neurol Scand:
10.1111/j.1600-0404.2011.01620.x. © 2011 John Wiley & Sons A/S. Background -  Previous work using proton MR spectroscopy ((1) H-MRS) of the cerebellum in the ataxias suggested that (1) H-MRS abnormalities and atrophy do not necessarily occur concurrently. Aims -  To investigate the spectroscopic features of different types of ataxias. Methods -  Using a clinical MR system operating at 1.5T, we performed (1) H-MRS with a single voxel placed over the right dentate nucleus in 22 patients with gluten ataxia (GA), six patients with Friedreich's ataxia (FA), six patients with spinocerebellar ataxia type 6 (SCA6) and 21 healthy volunteers. Atrophy of the vermis and hemispheres on standard MRI was rated by a neuroradiologist. Any interaction between atrophy and (1) H-MRS was analysed for the three groups of patients and controls. Results -  Patients with GA had significant atrophy of the vermis and hemispheres as well as abnormal (1) H-MRS. Patients with SCA6 had more severe overall atrophy of the vermis and hemispheres, but relatively preserved N-acetyl-aspartate/creatine (NAA/Cr). The FA group showed significant atrophy of only the superior vermis with normal (1) H-MRS. Conclusions -  This study suggests that (1) H-MRS of the cerebellum in patients with ataxia provides information in addition to the presence of atrophy. There are significant (1) H-MRS differences amongst different types of ataxia with interesting correlations between atrophy and NAA/Cr.


Department of Neurology, Royal Hallamshire Hospital, Sheffield, UK Department of Academic Neuroradiology, Royal Hallamshire Hospital, Sheffield, UK.

Journal Details

This article was published in the following journal.

Name: Acta neurologica Scandinavica
ISSN: 1600-0404


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