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New JNM research supports upcoming Alzheimer's disease guidelines
Date:8/1/2011

Reston, Va. (August 1, 2011) Two new studies published in the August issue of The Journal of Nuclear Medicine (JNM) provide insight into the potential of positron emission tomography (PET) to differentiate between types of dementia and to identify pharmaceuticals to slow the progress of dementia. With proposed National Institute on Aging (NIA) and the Alzheimer's Association guidelines for detecting Alzheimer's-related brain changes expected in September, these articles give a preview of what may be to come.

Earlier this year, the NIA and the Alzheimer's Association released new criteria and guidelines for the diagnosis of Alzheimer's disease. The new proposed guidelines available this fall will offer additional information regarding the development of tests to measure biological changes in the brain, blood, or spinal fluid to diagnose Alzheimer's at an earlier stage.

Earlier diagnosis of Alzheimer's disease is the focus of the JNM article "Amyloid Imaging with 18F-Florbetaben in Alzheimer Disease and Other Dementias." In this study researchers compared cortical amyloid deposition using 18F-florbetaben and PET in 109 controls and subjects with mild cognitive impairment (MCI), frontotemporal lobar degeneration, dementia with Lewy bodies, vascular dementia, Parkinson's disease and Alzheimer's disease.

The results show that 18F-florbetaben performs with the same high accuracy as previously reported with 11C-Pittsburgh Compound Bthe most specific and widely used amyloid imaging agentfor distinguishing between certain types of neurodegenerative dementia, particularly for diagnosis of Alzheimer's disease from frontotemporal dementia.

"The difference between 11C-Pittsburgh Compound B and 18F-florbetaben is that the 18F-florbetaben has a longer half life and is more affordable, making it appropriate for clinical use," said Christopher Rowe, MD, FRACP, one of the authors of the study. "This distinction profoundly affects t
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Contact: Susan Martonik
smartonik@snm.org
703-652-6773
Society of Nuclear Medicine
Source:Eurekalert

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