Inspiration
Alzheimer’s disease is one of the most challenging neurological disorders, largely because it is often diagnosed too late for effective intervention. I was inspired to build this project after learning that early structural and cognitive changes can appear years before a clinical diagnosis. As a student interested in AI and healthcare, I wanted to explore how machine learning could help identify early risk signals and potentially improve patient outcomes.
What it does
This project explores whether simple measurements extracted from MRI images can help detect early risk signals associated with Alzheimer’s disease. The system analyzes brain MRI scans to identify subtle structural changes that may appear in the early stages. It produces an estimated risk indicator that can support further clinical evaluation, rather than providing a medical diagnosis.
How I built it
I built this project in Python by analyzing grayscale MRI images and focusing on the relationship between brain tissue and cerebrospinal fluid (CSF). In general, a healthier brain contains more visible brain tissue, while increased CSF space can indicate brain shrinkage. The pipeline removes background noise, isolates the brain region, identifies darker pixels associated with CSF, and computes a CSF-to-brain pixel ratio that reflects structural differences across images.
Challenges I ran into
One major challenge was that early Alzheimer’s-related changes are extremely subtle and difficult to detect visually. MRI images are complex, and small preprocessing errors can significantly affect results. Additionally, limited labeled data made it challenging to train and validate more advanced models, requiring careful design of simple and interpretable features.
What I learned
Through this project, I learned how subtle structural brain changes such as tissue loss and ventricle enlargement can be quantified numerically rather than detected visually. I gained hands-on experience working with MRI data in Python, performing image preprocessing, and extracting simple but meaningful features. Most importantly, I learned that AI systems like this can serve as early warning tools, but must always be used carefully and alongside medical expertise.
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