PURPOSE To compare CT and radionuclide imaging of osmotic blood-brain barrier disruption. To develop a quantitative method for imaging osmotic blood-brain barrier disruption and to see if iopamidol could be safely given intravenously in conjunction with blood-brain barrier disruption. METHODS Forty-five blood-brain barrier disruption procedures were imaged with CT and radionuclide scans. The ...

BACKGROUND AND PURPOSE The integrity of the blood-brain barrier may play an important pathophysiological role during postischemic reperfusion. To determine the factors that lead to exacerbation of brain injury by reperfusion, we investigated changes in cerebral blood flow, blood-brain barrier permeability, edema formation, and infarction in permanent or temporary middle cerebral artery occlusio...

BACKGROUND AND PURPOSE Increased blood-brain barrier permeability is believed to be associated with complications following acute ischemic stroke and with infarct expansion. Measurement of blood-brain barrier permeability requires a delayed image acquisition methodology, which prolongs examination time, increasing the likelihood of movement artefacts and radiation dose. Existing quantitative me...

Group B Streptococcus (GBS) is the major cause of human neonatal infections. A single clone, designated CC17-GBS, accounts for more than 80% meningitis cases, most severe form infection. However, events allowing blood-borne GBS to penetrate brain remain largely elusive. In this study, we identified host transmembrane receptors ?5?1 and ?v?3 integrins as ligands Srr2, a CC17-GBS–specific adhesin...