FIG 4. Follow-up examinations after 6 (A, B) and 9 (C, D) months. T1-weighted MR images on the left show a progressive decrease of the symmetrical bilateral high signal intensity in the globus pallidus and putamen, and 1H spectroscopic measurements on the right show normalization of the mI/Cr and Cho/Cr ratios and a progressive decrease of the alpha- and beta, gamma-Glx/Cr peak areas ratios after 6 and 9 months (arrows).