Fig. 4From: Decreased frontal white-matter diffusion and improved cognitive flexibility after burr-hole surgery in moyamoya angiopathyBox plots. TMT-B median z-score (IQR) increased from − 1.47 (− 3.1; − 1.1) before surgery to − 0.21 (− 1.5; 0.5) after surgery (p = 0.018 **)Back to article page