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Cocaine-induced changes in time course of regional cerebral blood volume and transit time as determined by dynamic MR imaging

✍ Scribed by Ka-Loh Li; James N. Suojanen


Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
411 KB
Volume
5
Category
Article
ISSN
1053-1807

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✦ Synopsis


Abstract

We examined cocaine‐mediated changes in regional cerebral blood volume (rCBV) and mean transit time (MTT) in central brain structures of rats using functional MR imaging techniques. Changes in MTT and rCBV in animals who had previously been given cocaine depended on the length of time between the last pretreatment injection and the acute injection and seemed to parallel cocaine‐mediated changes in extracellular dopamine concentrations.


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Functional magnetic resonance imaging (fMRI) has been applied to study rat focal brain activation induced by intravenous administration of the GABA(A) antagonist bicuculline. Using magnetite nanoparticles as a blood pool contrast agent, local changes in cerebral blood volume (CBV) were assessed with