Memory test and PET scans detect early signs of Alzheimer’s

Berkeley — A large study of patients with mild cognitive impairment revealed that results from cognitive tests and brain scans can work as an early warning system for the subsequent development of Alzheimer’s disease.

The research found that among 85 participants in the study with mild cognitive impairment, those with low scores on a memory recall test and low glucose metabolism in particular brain regions, as detected through positron emission tomography (PET), had a 15-fold greater risk of developing Alzheimer’s disease within two years, compared with the others in the study.

The results, reported by researchers at the University of California, Berkeley, on Tuesday, July 14, at the Alzheimer’s Association 2009 International Conference on Alzheimer’s Disease in Vienna, Austria, are a major step forward in the march toward earlier diagnoses of the debilitating disease.

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