Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/199822
Type: Artigo de periódico
Title: Mri-texture Analysis Of Corpus Callosum, Thalamus, Putamen, And Caudate In Machado-joseph Disease.
Author: de Oliveira, Márcia S
D'Abreu, Anelyssa
França, Marcondes C
Lopes-Cendes, Iscia
Cendes, Fernando
Castellano, Gabriela
Abstract: Texture analysis (TA) is a branch of image processing, which attempts to convey texture information from digital images, such as magnetic resonance images (MRI). Machado-Joseph disease (MJD) affects mainly cerebellum and brainstem, but recent studies have shown that other cerebral structures may also be affected. To investigate subtle structural abnormalities in corpus callosum (CC), thalami, putamen, and caudate nuclei of patients with MJD using TA. Eighteen healthy volunteers and 18 patients with MJD were studied (mean age at disease onset = 34.7 years; disease duration = 9.6 years; mean expanded CAG in the MJD1 gene = 73). A TA approach based on the gray-level cooccurrence matrix was applied to T1-MRI. Regions of interest were manually segmented for each subject, and texture parameters were computed for each of the aforementioned anatomical structures. TA parameters showed differences between the 2 groups for the caudate nuclei, thalami, and putamen. No differences were found for the CC. TA was capable of detecting tissue alterations in MRI of patients with MJD. These alterations were in areas already shown to be affected by histopathological studies. In addition, we confirmed the thalamic involvement in patients with MJD, which had only been demonstrated in volumetric studies.
Subject: Adult
Brain
Female
Humans
Imaging, Three-dimensional
Machado-joseph Disease
Male
Neurons
Reproducibility Of Results
Sensitivity And Specificity
Rights: fechado
Identifier DOI: 10.1111/j.1552-6569.2010.00553.x
Address: http://www.ncbi.nlm.nih.gov/pubmed/21122004
Date Issue: 2012
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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