Focal cerebral blood flow
change during craving for
alcohol measured by SPECT.
To test the hypothesis that craving for alcohol in the
alcohol-dependent individual is mediated by a limbic circuit
involving the caudate nuclei, regional cerebral blood flow was
measured with [99mTc]HMPAO SPECT during control and craving
conditions in 9 alcohol-dependent subjects. In all subjects, blood
flow in the head of the right caudate nucleus increased during the
craving condition, and these blood flow increases were strongly
correlated with the experimentally induced increases in craving for
alcohol. These new findings suggest a functional role for the limbic
striatum in the mediation of craving and impaired control over
alcohol consumption.
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