HONOLULU (KHON2) — A new study shows that brain scans can possibly show the presence of Alzheimer’s disease before symptoms starts.

Researchers with the Radiological Society of North America said a large size choroid plexus in the brain can show early signs of Alzheimer’s.

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The team analyzed more than 500 MRIs of patients with different levels of cognitive disabilities.

The study showed people with higher choroid plexus levels were linked to greater mental deterioration.