For diagnostic purposes, magnetic resonance imaging (MRI) and (18Ffluorodeoxyglucose) positron emission tomography (FDG-PET) are applied. They measure either atrophy or reductions in glucose utilization. The three clinical subtypes of<unk> , frontotemporal dementia, semantic dementia and progressive nonfluent aphasia, are characterized by impairments in specific neural networks. The first subtype with behavioral deficits, frontotemporal dementia, mainly affects a frontomedian network discussed in the context of social cognition. Semantic dementia is mainly related to the inferior temporal poles and amygdalae; brain regions that have been discussed in the context of conceptual knowledge, semantic information processing, and social cognition, whereas progressive nonfluent aphasia affects the whole left frontotemporal network for phonological and syntactical processing.
Frontotemporal lobar degeneration
Corticobasal degeneration
Low pressure hydrocephalus
Lewy body dementias
Normal pressure hydrocephalus
Multiple system atrophy
Dementia with Lewy bodies
Frontotemporal dementia