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Permeability Parameters Measured with Dynamic Contrast-Enhanced MRI: Correlation with the Extravasation of Evans Blue in a Rat Model of Transient Cerebral Ischemia

Authors
 Hyun Seok Choi ; Sung Soo Ahn ; Seung Koo Lee ; Ji Hoe Heo ; Hye Yeon Lee ; Jong Eun Lee ; Jae Hyung Kim ; Jinna Kim ; Na Young Shin 
Citation
 Korean Journal of Radiology, Vol.16(4) : 791~797, 2015 
Journal Title
 Korean Journal of Radiology 
ISSN
 1229-6929 
Issue Date
2015
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 (K(trans), 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 (K(trans), ve, and vp) showed a linear correlation with extravasation of Evans blue. Among them, K(trans) 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 K(trans) shows the strongest correlation among the tested parameters.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/141177
DOI
10.3348/kjr.2015.16.4.791
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Anatomy
1. 연구논문 > 1. College of Medicine > Dept. of Radiology
1. 연구논문 > 1. College of Medicine > Dept. of Neurology
Yonsei Authors
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