Which form of dementia demonstrates on SPECT with hypoperfusion and PET with reduced glucose metabolism in the frontal and temporal lobes with sparing of the remaining cerebral cortex?

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The frontotemporal dementias represent a diverse group of diseases with differential diagnosis including familial frontotemporal dementia, Pick disease, semantic dementia, and primary progressive aphasia.Frontotemporal degeneration occurs in approximately 16% of early dementias and is clinically characterized by behavioral disturbances more than by losses of cognitive capacity and memory.SPECT shows hypoperfusion and PET shows reduced glucose metabolism in the frontal and temporal lobes with sparing of the remaining cerebral cortex.

Which Form of Dementia Demonstrates on SPECT with Hypoperfusion and PET