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Abstract
Nuclear neuroimaging, with single photon emission computed tomography (SPECT) or with positron emission tomography (PET), allows study of functional and neurochemical aspects of human brain. It provides in vivo informations about pathophysiology in dementia. The routinely available tracers are perfusional tracers ( 99mTc-HMPAO/GE Healthcare and 99mTc-ECD/BMS). In June 2006, a new indication for the DaTSCAN ® (GE Healthcare) has been adopted. DaTSCAN ® could now be used to help differentiate probable dementia with Lewy bodies from Alzheimer's disease. Since a few years, there have been tremendous efforts expended to develop specific radioligands for several neurochemical systems and for imaging of beta-amyloid plaques. The aim of this paper is to review the most common radiotracers for SPECT and PET brain imaging in dementia and to focus on the new tracers.
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