A Comparative Study of Brain Structure and Amyloid Load Between Cognitively Impaired Older People With or Without Diabetes Mellitus

Older people with DM are at greater risk of cognitive decline than their counterparts with DM. Cognitive impairment in older people with DM may be associated with non-AD related brain atrophy and white matter disease. The investigators therefore propose to compare DM and non-DM older people with amnesic MCI in brian volumes, white matter disease and amyloid load.

30 older people with aMCI, 30 older people with aMCI and DM, age 65-85 will be recruited. They all will have amyloid PET scan and MRI brain scan.