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Updated: Jul 16, 2026

Hybrid µCT-FMT imaging and image analysis
Published on: June 4, 2015
[Introduction to and general remarks on molecular imaging]
Hiroshi Fukuda1, Nobuyuki Okamura
1Department of Nuclear Medicine and Radiology, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo machi, Aoba ku, Sendai 980 8575, Japan.
Positron emission tomography (PET) molecular imaging aids early Alzheimer's disease (AD) diagnosis. Reduced acetylcholine esterase activity and amyloid-beta plaques are key indicators detected by PET scans.
Area of Science:
- Molecular imaging utilizes advanced techniques like positron emission tomography (PET) to visualize molecular processes in living organisms.
- Focus on developing and applying novel probes for sensitive detection of disease biomarkers.
Context:
- Alzheimer's disease (AD) diagnosis, particularly in early stages, remains a significant challenge.
- Positron emission tomography (PET) offers high sensitivity and human applicability for molecular imaging.
- Existing research explores acetylcholine esterase activity and amyloid-beta plaque imaging for AD detection.
Purpose:
- To concentrate on molecular imaging using PET for the early diagnosis of Alzheimer's disease (AD).
- To investigate the utility of 11C-MP4P for measuring acetylcholine esterase (AchE) activity in the AD brain.
- To explore novel probes like BF-168 and BF-227 for imaging amyloid-beta plaques in Alzheimer's disease.
Summary:
- PET imaging revealed decreased acetylcholine esterase (AchE) activity in the hippocampus, amygdala, and neocortex of early-onset AD patients compared to controls.
- These reductions in AchE activity were observed to precede decreases in cerebral blood flow.
- New PET probes, such as 11C-BF-227, are being developed and tested for specific amyloid-beta plaque detection in the AD brain.
Impact:
- Early detection of Alzheimer's disease (AD) is crucial for timely intervention and management.
- This research aims to enable the detection of AD at its pre-clinical stage.
- Advancements in molecular imaging contribute to a better understanding of AD pathogenesis and facilitate drug development.
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