期刊
AGEING RESEARCH REVIEWS
卷 30, 期 -, 页码 73-84出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.arr.2016.02.003
关键词
FDG PET; Alzheimer's disease; Mild cognitive impairment; Fluorodeoxyglucose; Preclinical AD; Dementia
资金
- Grants-in-Aid for Scientific Research [24590908] Funding Source: KAKEN
The purpose of this article is to present a selective and concise summary of fluorodeoxyglucose (FDG) positron emission tomography (PET) in dementia imaging. FDG PET is used to visualize a downstream topographical marker that indicates the distribution of neural injury or synaptic dysfunction, and can identify distinct phenotypes of dementia due to Alzheimer's disease (AD), Lewy bodies, and frontotemporal lobar degeneration. AD dementia shows hypometabolism in the parietotemporal association area, posterior cingulate, and precuneus. Hypometabolism in the inferior parietal lobe and posterior cingulate/precuneus is a predictor of cognitive decline from mild cognitive impairment (MCI) to AD dementia. FDG PET may also predict conversion of cognitively normal individuals to those with MCI. Age-related hypometabolism is observed mainly in the anterior cingulate and anterior temporal lobe, along with regional atrophy. Voxel-based statistical analyses, such as statistical parametric mapping or three-dimensional stereotactic surface projection, improve the diagnostic performance of imaging of dementias. The potential of FDG PET in future clinical and methodological studies should be exploited further. (C) 2016 Elsevier B.V. All rights reserved.
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