Abnormalities of the uncinate fasciculus and posterior cingulate fasciculus in mild cognitive impairment and early Alzheimer's disease: A diffusion tensor tractography study

被引：91

作者：

Kiuchi, Kuniaki ^{[1
]}

Morikawa, Masayuki ^{[1
,2
]}

Taoka, Toshiaki ^{[3
]}

Nagashima, Tomohisa ^{[1
]}

Yamauchi, Takahira ^{[1
]}

Makinodan, Manabu ^{[1
]}

Norimoto, Kazunobu ^{[1
]}

Hashimoto, Kazumichi ^{[1
]}

Kosaka, Jun ^{[1
,2
]}

Inoue, Yuichiro ^{[1
]}

Inoue, Makoto ^{[1
]}

Kichikawa, Kimihiko ^{[3
]}

Kishimoto, Toshifumi ^{[1
]}

机构：

[1] Nara Med Univ, Dept Psychiat, Nara 6348522, Japan

[2] Sakai City Mental Hlth Ctr, Sakai, Osaka, Japan

[3] Nara Med Univ, Dept Radiol, Kashihara, Nara 634, Japan

来源：

BRAIN RESEARCH | 2009年 / 1287卷

关键词：

Alzheimer's disease; Diffusion tensor imaging; Diffusion tensor tractography; Mild cognitive impairment; Tractography; Tract based method; WHITE-MATTER ALTERATIONS; LONGITUDINAL FASCICULUS; TEMPORAL STEM; FIBER TRACTS; ANISOTROPY; CORTEX; SCHIZOPHRENIA; INTEGRITY; BRAIN; HEALTH;

D O I：

10.1016/j.brainres.2009.06.052

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

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. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：184 / 191

页数：8

共 47 条

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