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2. © 1999 American Academy of Neurology. Published by American Academy of Neurology.2 Table Parkinsonism due to predominant involvement of substantia nigra in Japanese encephalitis. Pradhan, S; Pandey, N; Shashank, S; Gupta, R; Mathur, A Neurology. 53(8):1781-1786, November 10, 1999. DOI: 10.1212/WNL.53.8.1781 Table Clinical, laboratory, and radiologic features in patients with Japanese encephalitis with isolated involvement of substantia nigra

3. © 1999 American Academy of Neurology. Published by American Academy of Neurology.3 Figure 1 Parkinsonism due to predominant involvement of substantia nigra in Japanese encephalitis. Pradhan, S; Pandey, N; Shashank, S; Gupta, R; Mathur, A Neurology. 53(8):1781-1786, November 10, 1999. DOI: 10.1212/WNL.53.8.1781 Figure 1. T2 (A), T1 (B), magnetization transfer (MT)-T1 (C), and postcontrast MT-T1 (D) weighted MRI in the axial plane through the midbrain in a patient with Japanese encephalitis show selective lesions in the substantia nigra that are bilateral but asymmetric. The lesions appear hyperintense on T2 (arrows), hypointense on T1, and mixed intensity on MT-T1-weighted images. There is no abnormal enhancement on postcontrast MT-T1-weighted image. The rest of the brain did not show any signal abnormality.

4. © 1999 American Academy of Neurology. Published by American Academy of Neurology.4 Figure 2 Parkinsonism due to predominant involvement of substantia nigra in Japanese encephalitis. Pradhan, S; Pandey, N; Shashank, S; Gupta, R; Mathur, A Neurology. 53(8):1781-1786, November 10, 1999. DOI: 10.1212/WNL.53.8.1781 Figure 2. Axial MRI through midbrain in a patient with Japanese encephalitis shows T2 hyperintensities (arrows) in the substantia nigra (A). These lesions were hypointense on T1 and of mixed intensity on magnetization transfer (MT)-T1-weighted images. There was no enhancement on postcontrast MT-T1 image (B). Imaging of the rest of the brain showed no abnormal finding.

5. © 1999 American Academy of Neurology. Published by American Academy of Neurology.5 Figure 3 Parkinsonism due to predominant involvement of substantia nigra in Japanese encephalitis. Pradhan, S; Pandey, N; Shashank, S; Gupta, R; Mathur, A Neurology. 53(8):1781-1786, November 10, 1999. DOI: 10.1212/WNL.53.8.1781 Figure 3. T2-weighted axial MRI through the midbrain shows selective hyperintensities (arrow) in the substantia nigra in a patient with Japanese encephalitis.