Samantha Galluzzi

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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)
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)
The extent to which white matter changes affect brain function in elderly individuals is a matter for debate. Although there is a consensus that large confluent white matter lesions (WMLs) can be attributed to small-vessel disease and might denote anatomical damage to axons, the clinical effect of WMLs with regard to cognitive impairment is less certain. In(More)
BACKGROUND AND AIMS Gender and age effect on brain morphology have been extensively investigated. However, the great variety in methods applied to morphology partly explain the conflicting results of linear patterns of tissue changes and lateral asymmetry in men and women. The aim of the present study was to assess the effect of age, gender and laterality(More)
OBJECTIVE To compare patterns of brain atrophy in fronto-temporal dementia (FTD) and Alzheimer's disease (AD) since atrophy in individual areas may not be sufficiently specific as diagnostic marker. METHODS Frontal, temporal and hippocampal atrophy was measured from MRI of 10 FTD patients, 27 AD, and 27 controls. Corrected atrophy and asymmetry were(More)
Prior studies reported that the hippocampal volume is smaller in Alzheimer's disease patients carrying the Apolipoprotein E ε4 allele (APOE4) versus patients who are non-carriers of this allele. This effect however has not been detected consistently, possibly because of the regionally-specific involvement of the hippocampal formation in Alzheimer's disease.(More)
BACKGROUND AND AIMS To describe the clinical and neuropsychological features of a large group of cognitively intact persons subjected to brain high-resolution magnetic resonance (MR), to compare them with the general population, and to set norms for medial temporal atrophy and white matter lesions. METHODS Participants in the Italian Brain Normative(More)
The effect of white matter lesions (WMLs) on the brain of elderly individuals is unclear. Most debate has focused on the clinical effect of WMLs on cognitive impairment. Large cross-sectional and longitudinal clinic- and population-based studies suggest that the effect of WMLs on global cognitive performance is relatively small, only individuals with the(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)
Patients with Alzheimer's disease (AD) and schizophrenia display cognitive, behavioural disturbances and morphological abnormalities. Although these latter reflect progressive neurodegeneration in AD, their significance in schizophrenia is still unclear. We explored the patterns of hippocampal and amygdalar atrophy in those patients and their associations(More)