Abstract
Objective: The purpose of this study was to correlate permeability parameters measured with dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) using a clinical 3-tesla scanner with extravasation of Evans blue in a rat model with transient cerebral ischemia. Materials and Methods: Sprague-Dawley rats (n = 13) with transient middle cerebral artery occlusion were imaged using a 3-tesla MRI with an 8-channel wrist coil. DCE-MRI was performed 12 hours, 18 hours, and 36 hours after reperfusion. Permeability parameters (Ktrans, ve, and vp) from DCE-MRI were calculated. Evans blue was injected after DCE-MRI and extravasation of Evans blue was correlated as a reference with the integrity of the blood-brain barrier. Correlation analysis was performed between permeability parameters and the extravasation of Evans blue. Results: All permeability parameters (Ktrans, ve, and vp) showed a linear correlation with extravasation of Evans blue. Among them, Ktrans showed highest values of both the correlation coefficient and the coefficient of determination (0.687 and 0.473 respectively, p < 0.001). Conclusion: Permeability parameters obtained by DCE-MRI at 3-T are well-correlated with Evans blue extravasation, and Ktrans shows the strongest correlation among the tested parameters.
Original language | English |
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Pages (from-to) | 791-797 |
Number of pages | 7 |
Journal | Korean journal of radiology |
Volume | 16 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2015 Aug 1 |
Bibliographical note
Publisher Copyright:© 2015 The Korean Society of Radiology.
All Science Journal Classification (ASJC) codes
- Radiology Nuclear Medicine and imaging