Publications & Research

PET, MRI, Cerebrospinal Analysis Best for Alzheimer’s Test

Fluorodeoxyglucose-PET (FDG-PET), along with MRI and cerebrospinal analysis, significantly increases the accuracy of predicting Alzheimer’s disease progression from mild cognitive impairment, according to a study published today in the journal Radiology.

Early diagnosis of Alzheimer’s disease is essential because the available treatments are most effective in the early stages of the disease. “Although there is no cure for Alzheimer’s disease, there are four symptomatic treatments that might provide some benefits,” P. Murali Doraiswamy, MD, said in a release. “So developing the right combination of diagnostic tests is critical to make sure we enable an accurate and early diagnosis in patients, so they can evaluate their care options.” Doraiswamy is a professor of psychiatry at Duke University Medical Center and the study’s co-author.

Researchers assessed 97 patients with mild cognitive impairment (MCI) who underwent MRI, FDG-PET, and cerebrospinal fluid testing for fluid proteins. The results were compared to cognitive outcomes at two to three years.

Researchers found that by combining all three tests they were able to increase the accuracy of predicting conversion to Alzheimer’s disease over clinical testing alone. There was the added benefit of a decrease in false classifications, from 41.3 percent to 28.4 percent.

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