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Decrease in Cerebral and Cerebellar Gray Matter in Essential Tremor: A Voxel-Based Morphometric Analysis under 3T MRI.
MedLine Citation:
PMID:  21447032     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
BACKGROUND AND PURPOSE: Though routine neuroimaging is usually normal in essential tremor (ET) there is clinical evidence of widespread involvement of central nervous system. This study aimed at determining morphological changes in brain of patients with ET using voxel-based morphometry (VBM) analysis and also compare the subtypes of ET. METHODS: Clinical and imaging data of 20 patients (5 women, 15 men; mean age 38.2 ± 16.5 years) of ET were collected prospectively. To determine areas of gray matter (GM) atrophy, T1W volumetric MRI data of patients were compared with 17 matched control subjects using VBM analysis with Statistical Parametric Mapping 5. RESULTS: Compared to controls, patients showed scattered areas of cerebral and cerebellar atrophy. Voxel-wise analysis of patients with and without head tremor showed widespread areas of GM atrophy in cerebral hemispheres of patients with head tremor. No difference was observed between the familial and nonfamilial subgroups of ET. Multiple regression analysis revealed relationship between GM atrophy and tremor severity score. CONCLUSIONS: Patients with ET showed widespread areas of atrophy in both cerebellum and cerebral GM, which supports the current concept of the progressive and diffuse nature of ET. Patients with additional head tremor may represent a distinct subgroup of ET.
Authors:
Bhavani Shankara Bagepally; Maya Dattatraya Bhatt; Vijay Chandran; Jitender Saini; Rose Dawn Bharath; Mk Vasudev; Chandrajit Prasad; Ravi Yadav; Pramod Kumar Pal
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-3-29
Journal Detail:
Title:  Journal of neuroimaging : official journal of the American Society of Neuroimaging     Volume:  -     ISSN:  1552-6569     ISO Abbreviation:  -     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-3-30     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9102705     Medline TA:  J Neuroimaging     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2011 by the American Society of Neuroimaging.
Affiliation:
Department of Neuroimaging and Interventional Radiology (BSB, MDB, JS, RDB, MKV, CP) and Department of Neurology (VC, RY, PKP), National Institute of Mental Health & Neurosciences, Bangalore, Karnataka, India.
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