期刊
AMERICAN JOURNAL OF NEURORADIOLOGY
卷 35, 期 6, 页码 S12-S17出版社
AMER SOC NEURORADIOLOGY
DOI: 10.3174/ajnr.A3847
关键词
-
资金
- National Institutes of Health [R01AG040042, R21 NS066147, P50 AG16574/Project1, P50 AG44170/Project 2]
Development of molecular imaging agents for fibrillar beta-amyloid positron-emission tomography during the past decade has brought molecular imaging of Alzheimer disease pathology into the spotlight. Large cohort studies with longitudinal follow-up in cognitively normal individuals and patients with mild cognitive impairment and Alzheimer disease indicate that beta-amyloid deposition can be detected many years before the onset of symptoms with molecular imaging, and its progression can be followed longitudinally. The utility of beta-amyloid PET in the differential diagnosis of Alzheimer disease is greatest when there is no pathologic overlap between 2 dementia syndromes, such as in frontotemporal lobar degeneration and Alzheimer disease. However beta-amyloid PET alone may be insufficient in distinguishing dementia syndromes that commonly have overlapping beta-amyloid pathology, such as dementia with Lewy bodies and vascular dementia, which represent the 2 most common dementia pathologies after Alzheimer disease. The role of molecular imaging in Alzheimer disease clinical trials is growing rapidly, especially in an era when preventive interventions are designed to eradicate the pathology targeted by molecular imaging agents.
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