Axial MR images in a 51-year-old woman with parkinsonism.

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High-signal-intensity lesions on T2-weighted MR images

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Axial MR images in a 51-year-old woman with parkinsonism. Axial MR images in a 51-year-old woman with parkinsonism. Unenhanced T1-weighted MR imagings of the first (A and C) and fifth (3 years later; B and D) gadolinium-enhanced MR imagings performed with a nonionic linear GBCA (Omniscan) at the level of the basal ganglia (A and B) and the level of the dentate nuclei of the cerebellum (C and D). The images show progressively increased T1 signal of the globi pallidi and dentate nuclei (white arrows, B and D), undetectable on the first MR imaging. J. Ramalho et al. AJNR Am J Neuroradiol 2016;37:1192-1198 ©2016 by American Society of Neuroradiology