| Diagnostic utility of novel MRI-based biomarkers for Alzheimer's disease: diffusion tensor imaging and deformation-based morphometry. | |
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MedLine Citation:
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PMID: 20164559 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We report evidence that multivariate analyses of deformation-based morphometry and diffusion tensor imaging (DTI) data can be used to discriminate between healthy participants and patients with Alzheimer's disease (AD) with comparable diagnostic accuracy. In contrast to other studies on MRI-based biomarkers which usually only focus on a single modality, we derived deformation maps from high-dimensional normalization of T1-weighted images, as well as mean diffusivity maps and fractional anisotropy maps from DTI of the same group of 21 patients with AD and 20 healthy controls. Using an automated multivariate analysis of the entire brain volume, widespread decreased white matter integrity and atrophy effects were found in cortical and subcortical regions of AD patients. Mean diffusivity maps and deformation maps were equally effective in discriminating between AD patients and controls (AUC =0.88 vs. AUC=0.85) while fractional anisotropy maps performed slightly inferior. Combining the maps from different modalities in a logistic regression model resulted in a classification accuracy of AUC=0.86 after leave-one-out cross-validation. It remains to be shown if this automated multivariate analysis of DTI-measures can improve early diagnosis of AD in predementia stages. |
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Authors:
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Uwe Friese; Thomas Meindl; Sabine C Herpertz; Maximilian F Reiser; Harald Hampel; Stefan J Teipel |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of Alzheimer's disease : JAD Volume: 20 ISSN: 1875-8908 ISO Abbreviation: J. Alzheimers Dis. Publication Date: 2010 |
Date Detail:
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Created Date: 2010-05-27 Completed Date: 2010-09-07 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9814863 Medline TA: J Alzheimers Dis Country: Netherlands |
Other Details:
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Languages: eng Pagination: 477-90 Citation Subset: IM |
Affiliation:
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Department of Psychiatry, University of Rostock, Germany Institute of Psychology, University of Osnabrueck, D-49076 Osnabrueck, Germany. uwe.friese@uni-osnabrueck.de |
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Alzheimer Disease / diagnosis* Biological Markers Brain / pathology* Brain Mapping* Diffusion Magnetic Resonance Imaging* Female Humans Magnetic Resonance Imaging* Male Middle Aged Multivariate Analysis Principal Component Analysis ROC Curve |
| Chemical | |
Reg. No./Substance:
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0/Biological Markers |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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