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Current Medical Imaging


ISSN (Print): 1573-4056
ISSN (Online): 1875-6603

Imaging Amyloid Pathology in the Living Brain

Author(s): Nobuyuki Okamura, Shozo Furumoto, Hiroyuki Arai, Ren Iwata, Kazuhiko Yanai and Yukitsuka Kudo

Volume 4, Issue 1, 2008

Page: [56 - 62] Pages: 7

DOI: 10.2174/157340508783502840

Price: $65


Progressive deposition of amyloid plaques in the brain, which begins before the appearance of cognitive decline, is an initiating event in the pathogenesis of Alzheimers disease. Therefore, noninvasive detection of amyloid pathology is important for presymptomatic diagnosis and preventive therapy for Alzheimers disease. Recent research advances have enabled the in vivo imaging of amyloid pathology in humans using nuclear medicine technology. Several amyloid-binding agents have been developed and evaluated by positron emission tomography (PET) and single photon emission computed tomography (SPECT) for their use as contrast agents. Available clinical evidence indicates that amyloid imaging enables the early diagnosis of Alzheimers disease with high accuracy and suggests its usefulness for the prediction of progression to Alzheimers disease in subjects with mild cognitive impairment and probably also in cognitively normal individuals. Another application of this technology is as a surrogate marker for monitoring brain amyloid. In this review, we describe recent progress in the development of amyloid imaging technology and human clinical trials.

Keywords: Amyloid, Alzheimer's disease, Positron emission tomography (PET), molecular imaging, senile plaque, neurofibrillary tangle

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