3D maps localize caudate nucleus atrophy in 400 Alzheimer's disease, mild cognitive impairment, and healthy elderly subjects

NEUROBIOLOGY OF AGING

卷:31

Article

Madsen, S. K.¹  Ho, A. J.¹  Hua, X.¹  Saharan, P. S.¹  Toga, A. W.¹  Jack, C. R., Jr.²  Weiner, M. W.^3,4,5,6  Thompson, P. M.¹ 

[1] Univ Calif Los Angeles, Sch Med, Dept Neurol, Lab Neuro Imaging, Los Angeles, CA 90024 USA

[2] Mayo Clin, Coll Med, Rochester, MN USA

[3] Univ Calif San Francisco, Dept Radiol, San Francisco, CA 94143 USA

[4] Univ Calif San Francisco, Dept Med, San Francisco, CA USA

[5] Univ Calif San Francisco, Dept Psychiat, San Francisco, CA 94143 USA

[6] VA Med Ctr, San Francisco, CA USA

关键词: Alzheimer's disease;    Mild cognitive impairment;    Normal aging;    Caudate nucleus;    Brain mapping;    Surface mapping;    MRI;    Atrophy;    Alzheimer's Disease Neuroimaging Initiative;   

DOI  :  10.1016/j.neurobiolaging.2010.05.002

来源: Elsevier

【 摘 要 】

MRI research examining structural brain atrophy in Alzheimer's disease (AD) generally focuses on medial temporal and cortical structures, but amyloid and tau deposits also accumulate in the caudate. Here we mapped the 3D profile of caudate atrophy using a surface mapping approach in subjects with AD and mild cognitive impairment (MCI) to identify potential clinical and pathological correlates. 3D surface models of the caudate were automatically extracted from 400 baseline MRI scans (100 AD, 200 MCI, 100 healthy elderly). Compared to controls, caudate volumes were lower in MCI (2.64% left, 4.43% right) and AD (4.74% left, 8.47% right). Caudate atrophy was associated with age, sum-of-boxes and global Clinical Dementia Ratings, Delayed Logical Memory scores, MMSE decline 1 year later, and body mass index. Reduced right (but not left) volume was associated with MCI-to-AD conversion and CSF tau levels. Normal caudate asymmetry (with the right 3.9% larger than left) was lost in AD, suggesting preferential right caudate atrophy. Automated caudate maps may complement other MRI-derived measures of disease burden in AD. (C) 2010 Elsevier Inc. All rights reserved.

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