American Journal of Neuroradiology, Vol 15, Issue 3 581-590, Copyright © 1994 by American Society of Neuroradiology
ARTICLES |
Osmotic blood-brain barrier disruption: CT and radionuclide imaging
S Roman-Goldstein, DA Clunie, J Stevens, R Hogan, J Monard, F Ramsey and EA Neuwelt
Oregon Health Sciences University, Portland 97201-3098.
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 scans were evaluated with visual and quantitative scales. Patients were observed for adverse effects after blood-brain barrier disruption. RESULTS: There was a 4% rate of seizures in this study. There was good agreement between visual CT and radionuclide grading systems. Quantitative methods to grade disruption did not add useful information to visual interpretations. CONCLUSIONS: Nonionic iodine-based contrast medium has a lower incidence of seizures when injected intravenously in conjunction with osmotic blood-brain barrier disruption than ionic contrast material. Contrast-enhanced CT is the preferred method to image disruption because it has better spatial resolution than radionuclide techniques.
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