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  • Title: Magnetic resonance imaging distinguishes progressive supranuclear palsy from multiple system atrophy.
    Author: Asato R, Akiguchi I, Masunaga S, Hashimoto N.
    Journal: J Neural Transm (Vienna); 2000; 107(12):1427-36. PubMed ID: 11458995.
    Abstract:
    To establish diagnostic magnetic resonance imaging (MRI) criteria for differentiating progressive supranuclear palsy (PSP) from multiple system atrophy (MSA), magnetic resonance images from eight patients with probable PSP, 30 with probable MSA (nine striatonigral degeneration (MSA-P) and 21 olivopontocerebellar atrophy (MSA-C)), and ten age-matched controls were retrospectively studied. Anteroposterior diameters in the midline sagittal T1-weighted image of the rostral (RMT) and caudal midbrain tegmentum (CMT), caudal pons and medulla were measured. Divergence of the red nuclei (RN) in the axial T2-weighted image was judged. All PSP images had a smaller RMT diameter than the lower limit of the normal range, showed RN divergence, and had a pontine diameter within the normal range. All MSA images had a CMT diameter within the normal range; no MSA images showed divergence of RN. Forty-four percent (4/9) of MSA-P and 76% (16/21) of MSA-C images had a pontine diameter smaller than the lower limit of the normal range. On basis of the results, we propose MRI diagnostic criteria for differentiating PSP from MSA.
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