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PURPOSE To explore the regional patterns of white matter (WM) tract damage in (a) patients with probable Alzheimer disease (AD) and (b) patients with amnestic mild cognitive impairment (aMCI) and at least one abnormal biomarker and to investigate whether WM damage is related to gray matter (GM) atrophy. MATERIALS AND METHODS This study was approved by the(More)
OBJECTIVES To identify non-demented individuals with cognitive impairment due to a cerebrovascular etiology among those coming to observation of a memory clinic and to describe their clinical features and outcome. METHODS Patients were enrolled in a prospective study on early cognitive impairment carried out in a Memory Clinic. Mild cognitive impairment(More)
OBJECTIVE We evaluated the changes induced by cerebrovascular (CV) damage on brain rhythmicity recorded by electroencephalography (EEG) in a cohort of subjects with mild cognitive impairment (MCI). METHODS We enrolled 99 MCI subjects (Mini-Mental State Examination [MMSE] mean score 26.6). All subjects underwent EEG recording and magnetic resonance imaging(More)
An emerging issue in neuroimaging is to assess the diagnostic reliability of PET and its application in clinical practice. We aimed at assessing the accuracy of brain FDG-PET in discriminating patients with MCI due to Alzheimer's disease and healthy controls. Sixty-two patients with amnestic MCI and 109 healthy subjects recruited in five centers of the(More)
Large-scale longitudinal neuroimaging studies with diffusion imaging techniques are necessary to test and validate models of white matter neurophysiological processes that change in time, both in healthy and diseased brains. The predictive power of such longitudinal models will always be limited by the reproducibility of repeated measures acquired during(More)
BACKGROUND AND PURPOSE Patients with mild cognitive impairment and subcortical cerebrovascular disease (svMCI) can be isolated using criteria modified from those of Erkinjuntti et al. for subcortical vascular dementia and have poorer outcomes (cognitive deterioration, disability, institutionalization, and mortality). The aim of this study was to test which(More)
PURPOSE To investigate the possible effect of the APOE epsilon4 allele on age-related regional volume loss within the corpus callosum (CC) in healthy epsilon4 allele carriers compared with noncarriers. MATERIALS AND METHODS A total of 211 subjects, ages 27 to 83 years, 51 epsilon4 carriers and 160 noncarriers underwent T1-weighted MRI scan. All subjects(More)
The aim of this study is to support the use of biomarkers in the diagnosis of mild cognitive impairment (MCI) due to Alzheimer's disease (AD) according to the revised NIA-AA diagnostic criteria. We compared clinical features and conversion to AD and other dementias among groups of MCI patients with different abnormal biomarker profiles. In this study, we(More)
Neuroimaging is a mainstay in the differential diagnosis of patients with cognitive impairment. The often equivocal clinical pictures, the prognostic uncertainty of the earliest stages of mild cognitive impairment, and the subtle brain changes mean that neuroimaging techniques are of potentially great incremental diagnostic value. A number of methods,(More)
To assess the morphological changes of the hippocampus in Lewy body dementia (LBD) patients we used radial atrophy mapping, a mathematical modeling method sensitive to subtle differences in hippocampal shape. T1-weighted high resolution magnetic resonance (MR) scans were acquired from 14 LBD and 28 controls of similar age and gender, and were compared to(More)