Regional cerebral blood flow in neuropsychology.

Measurements of regional cerebral blood flow (rCBF) provide information about the metabolic and functional level of the cortex. Different techniques for measurement of rCBF are described and their potentials and limitations are outlined. Typical results from measurements in normals during performance of mental tasks are shown and as well as clinical measurements in patients with organic dementia. Future improvements of the techniques regarding spatial as well as temporal resolution are outlined. It is concluded that measurements of rCBF are likely to be of great value in the future exploration of brain-behaviour relationships.