Brain Changes Linked to Alzheimer's Detectable by MRI Years Earlier
A University of Oslo study suggests MRI scans can identify Alzheimer's-related brain changes at least seven years before significant protein levels accumulate.
Researchers at the University of Oslo have identified a potential new method for detecting early signs of Alzheimer's disease in the brain. A study published in Nature Neuroscience indicates that magnetic resonance imaging (MRI) can reveal measurable changes in the brain's cortex at least seven years before significant accumulation of amyloid-beta, a protein strongly associated with Alzheimer's.
The research involved analyzing MRI scans from over 1,000 cognitively healthy adults over a 16-year period. Scientists compared structural brain changes with subsequent PET scans that measured amyloid-beta buildup. The findings suggest that differences in the cortex can be detected long before protein accumulation reaches a diagnostic threshold.
The level of amyloid-beta buildup is a key metric used to identify Alzheimer's disease. The researchers aimed to understand what occurs in the brain prior to reaching this threshold. Anders Martin Fjell, a neuroscientist at the University of Oslo and co-author of the study, noted that brain changes related to later amyloid accumulation may begin earlier and be more complex than previously understood.
This study opens new avenues for earlier diagnosis of Alzheimer's disease and potentially the development of new treatment strategies. The ability to detect changes at such an early stage could improve patient outcomes and quality of life.