Abstract
Brain perfusion evaluation by single photon emission tomography (SPECT) is useful in diagnosing patients with dementia of Alzheimer’s type (DAT).1–9 DAT, in fact, is associated with a reduction in global cerebral blood flow (CBF) and metabolism as well as a highly diagnostic finding of a bilateral and almost symmetrical decrease of CBF and metabolism in the parieto-temporal regions.10,11 However, many DAT patients with posterior parieto-temporal flow reduction also have diffuse flow decrease in the frontal cortex area, usually of somewhat asymmetric distribution.12 The temporo-parietal flow reduction is often very asymmetric13,14 with the dominant neurological deficit usually localized on the most affected side of the brain, i.e. with aphasia dominating in the left-sided cases and visuo-spatial apraxia in the right-sided cases.15,16
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Postiglione, A. et al. (1995). Cerebral Blood Flow at Rest and During Cognitive Activation in Patients with Moderate Dementia of Alzheimer’s Type. In: Hanin, I., Yoshida, M., Fisher, A. (eds) Alzheimer’s and Parkinson’s Diseases. Advances in Behavioral Biology, vol 44. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-9145-7_8
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