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ORIGINAL RESEARCH PEDIATRICS Ultra-High-Field Targeted Imaging of Focal Cortical Dysplasia: TheIntracortical BlackLineSigninTypeIIb E. Bartolini, M. Cosottini, M. Costagli, C. Barba, L. Tassi, R. Spreafico, R. Garbelli, L. Biagi, A. Buccoliero, F. Giordano, and R. Guerrini ABSTRACT BACKGROUND AND PURPOSE: Conventional MR imaging has limitations in detecting focal cortical dysplasia. We assessed the added value of 7T in patients with histologically proved focal cortical dysplasia to highlight correlations between neuropathology and ultra-high-field imaging. MATERIALS AND METHODS: Between 2013 and 2019, we performed a standardized 7T MR imaging protocol in patients with drug- resistant focal epilepsy. We focused on 12 patients in whom postsurgical histopathology revealed focal cortical dysplasia and explored the diagnostic yield of preoperative 7T versus 1.5/3T MR imaging and the correlations of imaging findings with histopa- thology. We also assessed the relationship between epilepsy surgery outcome and the completeness of surgical removal of the MR imaging–visible structural abnormality. RESULTS: We observed clear abnormalities in 10/12 patients using 7T versus 9/12 revealed by 1.5/3T MR imaging. In patients with focal cortical dysplasia I, 7T MR imaging did not disclose morphologic abnormalities (n = 0/2). In patients with focal cortical dyspla- sia II, 7T uncovered morphologic signs that were not
American Journal of Neuroradiology – American Journal of Neuroradiology
Published: Dec 1, 2019
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