Abstract：
:Mild cognitive impairment (MCI) is considered the transitional stage between normal cognition and dementia. The aim of this study was to use tractography based analysis to elucidate alterations in subjects with MCI compared with subjects with early Alzheimer's disease (AD) and controls. Seventeen subjects with early AD, 16 with MCI and 16 controls underwent magnetic resonance diffusion tensor imaging (DTI) and neuropsychological assessment. Diffusion tensor tractographies were computed and fiber-tract maps were generated using "dTV II" DTI software. We measured mean fractional anisotropy (FA) and apparent diffusion coefficient (ADC) values along the uncinate fasciculus (UNC), posterior cingulate fasciculus (PCF) and corticospinal tract (CST). There were statistically significant differences in the FA and ADC values of the UNC and PCF between subjects with early AD and controls. Subjects with MCI exhibited significantly lower FA values on both sides of the PCF relative to controls. However, there were no significant differences between subjects with early AD and MCI for any measurement. Our results suggest that alterations in the PCF precede the onset of dementia.
journal_name
Brain Resjournal_title
Brain researchauthors
Kiuchi K,Morikawa M,Taoka T,Nagashima T,Yamauchi T,Makinodan M,Norimoto K,Hashimoto K,Kosaka J,Inoue Y,Inoue M,Kichikawa K,Kishimoto Tdoi
10.1016/j.brainres.2009.06.052subject
Has Abstractpub_date
2009-09-01 00:00:00pages
184-91eissn
0006-8993issn
1872-6240pii
S0006-8993(09)01268-2journal_volume
1287pub_type
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