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          Institute: MPI für Psychiatrie     Collection: Publikationen MPI für Psychiatrie     Display Documents



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ID: 395631.0, MPI für Psychiatrie / Publikationen MPI für Psychiatrie
Measurement of brain atrophy in subcortical vascular disease: A comparison of different approaches and the impact of ischaemic lesions
Authors:O'Sullivan, M.; Jouvent, E.; Sämann, P. G.; Mangin, J. F.; Viswanathan, A.; Gschwendtner, A.; Bracoud, L.; Pachai, C.; Chabriat, H.; Dichgans, M.
Language:English
Date of Publication (YYYY-MM-DD):2008-11-01
Title of Journal:NeuroImage
Volume:43
Issue / Number:2
Start Page:312
End Page:320
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:Measurement of brain atrophy has been proposed as a Surrogate marker in MS and degenerative dementias. Although cerebral small vessel disease predominantly affects white and subcortical grey matter, recent data suggest that whole brain atrophy is also a good indicator of clinical and cognitive status in this disease. Automated methods to measure atrophy are available that are accurate and reproducible in disease-free brains. However, optimal methods in small vessel disease have not been established and the impact of ischaemic lesions on different techniques has not been explored systematically. In this study, three contrasting techniques - Statistical Parametric Mapping 5 (SPM5), SIENAX and BrainVisa - were applied to measure cross-sectional atrophy (brain parenchymal fraction or BPF) in a large (n=143) two-centre cohort of patients with CADASIL, a genetic model of small vessel disease. All three techniques showed Similar sensitivity to trends in BPF associated with age and lesion load. No single technique was particularly vulnerable to error as a result Of lesions. Provided Major errors in registration were excluded by visual inspection, manual correction of segmentations had a negligible impact with mean errors of 0.41% for SIENAX and 0.46% for BrainVisa. BPF correlated Strongly with global cognitive function and physical disability, independent of the technique used. Correlation coefficients with the Minimental State Examination score were: BrainVisa 0.58, SIENAX 0.58, SPM5 0.60 (for all, p < 0.001). These results suggest that all three methods can be applied reliably in patients with ischaemic lesions. Choice of analysis approach for this kind of clinical question will be determined by factors other than their robustness and precision, such as a desire to explore Subtle localised changes using extensions of these processing tools. Crown Copyright (c) 2008 Published by Elsevier Inc. All rights reserved.
External Publication Status:published
Document Type:Article
Version Comment:Automatic journal name synchronization
Communicated by:N. N.
Affiliations:MPI für Psychiatrie
External Affiliations:[O'Sullivan, Mike; Gschwendtner, Andreas; Dichgans, Martin] Univ Munich, Klinikum Grosshadern, Neurol Klin, D-8000 Munich, Germany.; [Jouvent, Eric; Viswanathan, Anand; Chabriat, Hugues] CHU Lariboisiere, Dept Neurol, Paris, France.; [Sämann Philipp G.] Max Planck Inst Psychiat, D-8000 Munich, Germany.; [Mangin, Jean-Francois] CEA, Serv Hosp Frederic Jolliot, Unite Neuroanat Fonctionelle, Orsay, France.; [Viswanathan, Anand] Massachusetts Gen Hosp, Neurol Clin Trials Unit, Boston, MA 02114 USA.; [Bracoud, Luc; Pachai, Chahin] Bioimaging Technol SAS, Lyon, France.
Identifiers:ISI:000260215700013 [ID No:1]
ISSN:1053-8119 [ID No:2]
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