Molecular imaging in dementia: Past, present, and future

Area of Science:

• Neuroscience
• Medical Imaging

Background:

• Molecular imaging has revolutionized dementia research.
• Techniques like FDG PET, amyloid, and tau tracers offer in vivo insights into neurodegenerative diseases.

Purpose of the Study:

• To review key molecular imaging techniques in dementia research and practice.
• To summarize findings, discuss limitations, and propose solutions for imaging modalities.
• To present a novel algorithm for diagnosing complex neurodegenerative diseases.

Main Methods:

• Review of molecular imaging techniques (FDG PET, amyloid tracers, tau ligands).
• Analysis of individual and combined technique findings.
• Discussion of modality-specific limitations and recommendations.
• Proposal of a nonvalidated clinical algorithm for atypical neurodegenerative diseases.

Main Results:

• Molecular imaging has significantly advanced the understanding of neurodegenerative diseases.
• Combined imaging approaches provide a more comprehensive view of disease pathology.
• Specific limitations exist for each modality, requiring careful consideration.

Conclusions:

• Molecular imaging is crucial for dementia research, diagnosis, and clinical trials.
• Addressing modality limitations can further enhance diagnostic accuracy.
• The proposed algorithm may aid in earlier identification of complex neurodegenerative conditions.