Comparison of cortical lesion detection with MP2RAGE and T2 Comparison of cortical lesion detection with MP2RAGE and T2* weighted sequences at 7T. Comparison of cortical lesion detection with MP2RAGE and T2* weighted sequences at 7T. Intracortical (A–I), leukocortical (J–O), and juxtacortical (P–R) lesions (arrows) are seen to different degrees on T1 MP2RAGE (A, D, G, J, M, and P), T2*GRE (B, E, H, K, N, and Q), and T2*EPI (C, F, I, L, O, and R) sequences. A–C, An example of an intracortical lesion identified prospectively on all 3 sequences. D–F, An example of an intracortical lesion identified prospectively only on MP2RAGE and not visible even in retrospect on T2*GRE or T2*EPI. G–I, An example of an intracortical lesion identified prospectively only on MP2RAGE but visible in retrospect on T2*GRE and T2*EPI. J–L, An example of a leukocortical lesion, spanning the full cortical thickness and identified on all 3 sequences. M–O, An example of a leukocortical lesion, spanning the full cortical thickness and identified on T2*GRE and T2*EPI prospectively but only in retrospect on MP2RAGE. P–R, An example of a juxtacortical lesion identified as juxtacortical on MP2RAGE but initially incorrectly classified as a white matter lesion on GRE and EPI. Scale bar = 5 mm. E.S. Beck et al. AJNR Am J Neuroradiol 2018;39:459-466 ©2018 by American Society of Neuroradiology