Gray matter atrophy in parkinsons disease and the parkinsonian variant of multiple system atrophy: a combined roi- and voxel-based morphometric study
Clinics
; 75: e1505, 2020. tab, graf
Article
ي En
| LILACS
| ID: biblio-1133383
المكتبة المسؤولة:
BR1.1
ABSTRACT
OBJECTIVES:
Parkinson's disease (PD) and the parkinsonian variant of multiple system atrophy (MSA-P) are distinct neurodegenerative disorders that share similar clinical features of parkinsonism. The morphological alterations of these diseases have yet to be understood. The purpose of this study was to evaluate gray matter atrophy in PD and MSA-P using regions of interest (ROI)-based measurements and voxel-based morphometry (VBM).METHODS:
We studied 41 patients with PD, 20 patients with MSA-P, and 39 controls matched for age, sex, and handedness using an improved T1-weighted sequence that eased gray matter segmentation. The gray matter volumes were measured using ROI and VBM.RESULTS:
ROI volumetric measurements showed significantly reduced bilateral putamen volumes in MSA-P patients compared with those in PD patients and controls (p<0.05), and the volumes of the bilateral caudate nucleus were significantly reduced in both MSA-P and PD patients compared with those in the controls (p<0.05). VBM analysis revealed multifocal cortical and subcortical atrophy in both MSA-P and PD patients, and the volumes of the cerebellum and temporal lobes were remarkably reduced in MSA-P patients compared with the volumes in PD patients (p<0.05).CONCLUSIONS:
Both PD and MSA-P are associated with gray matter atrophy, which mainly involves the bilateral putamen, caudate nucleus, cerebellum, and temporal lobes. ROI and VBM can be used to identify these morphological alterations, and VBM is more sensitive and repeatable and less time-consuming, which may have potential diagnostic value.Key words
النص الكامل:
1
الفهرس:
LILACS
الموضوع الرئيسي:
Parkinson Disease
/
Atrophy
/
Magnetic Resonance Imaging
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Multiple System Atrophy
/
Gray Matter
نوع الدراسة:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
المحددات:
Female
/
Humans
/
Male
اللغة:
En
مجلة:
Clinics
موضوع المجلة:
MEDICINA
السنة:
2020
نوع:
Article