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Please use this identifier to cite or link to this item: http://hdl.handle.net/10564/2668

Title: Longitudinal white matter changes in Alzheimer's disease: a tractography-based analysis study
Other Titles: アルツハイマー型認知症における白質経時変化の検討 : トラクトグラフィーを用いた研究
Authors: Kitamura, Soichiro
Kiuchi, Kuniaki
Taoka, Toshiaki
Hashimoto, Kazumichi
Ueda, Shotaro
Yasuno, Fumihilko
Morikawa, Masayuki
Kichikawa, Kimihiko
Kishimoto, Toshifumi
Keywords: Alzheimer's disease
Dementia
Diffusion tensor imaging
Disease progression
Tract-based analysis
Issue Date: 17-Jun-2013
Publisher: Elsevier
Citation: Brain research Vol.1515 p.12-18
Abstract: Alzheimer's disease (AD) classically presents with gray matter atrophy, as well as feature significant white matter abnormalities. Previous evidence indicates the overall burden of these pathological changes continues to advance as the disease progresses. The aim of this study was to investigate whether pathological alterations of white matter tracts correlate with the course of AD disease progression. 35 AD patients and 29 normal controls were recruited to the study and administered baseline magnetic resonance diffusion tensor imaging (DTI) acquisition and a cognitive function assessment at the time of initial evaluation. Subjects were re-evaluated with secondary DTI scan and cognitive function assessment at intervals of about 1.5 years on average. For the DTI acquired scans, we calculated diffusion tensor parameters, fractional anisotropy (FA), apparent diffusion coefficient (ADC), radial diffusivity (DR), and axial diffusivity (DA) along with the uncinate fasciculus (UNC), the inferior longitudinal fasciculus (ILF), and the inferior occipitofrontal fasciculus (IOFF). Compared to baseline, a significant mean FA reduction of the bilateral UNC, as well as a significant mean DR increase of the left UNC, was evident in AD patients at follow-up. Compared with normal controls, AD patients exhibited significant diffusion parameter abnormalities in their UNC, ILF, and IOFF. Taken together, these results indicate that progressive pathological white matter alterations can be quantified using the DTI parameters utilized here and may prove to be a useful biological marker for monitoring the pathophysiological course of AD.
Description: 博士(医学)・甲第603号・平成25年11月27日
URI: http://hdl.handle.net/10564/2668
ISSN: 00068993
Academic Degrees and number: 24601A603
Degree-granting date: 2013-11-27
Degree name: 博士(医学)
Degree-granting institutions: 奈良県立医科大学
Appears in Collections:2013年度

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