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Figure 1: The MRI and SWI images of a WD patient who is 18 years old. T1-weighted image reveals bilateral symmetric low signal intensity in the globus pallidus, putamen and caudate nucleus. (a) T2-weighted image shows high signal intensity in the putamen and caudate nucleus, and both low signal and high signal in the globus pallidus. (b) SWI shows markedly dark paramagnetic signals in globus pallidus, putamen and caudate nucleus. (c) Some regions which had high signals on T2-weighted image had low signals on SWI (arrows)

Figure 1: The MRI and SWI images of a WD patient who is 18 years old. T1-weighted image reveals bilateral symmetric low signal intensity in the globus pallidus, putamen and caudate nucleus. (a) T2-weighted image shows high signal intensity in the putamen and caudate nucleus, and both low signal and high signal in the globus pallidus. (b) SWI shows markedly dark paramagnetic signals in globus pallidus, putamen and caudate nucleus. (c) Some regions which had high signals on T2-weighted image had low signals on SWI (arrows)