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  • Title: Chronic injuries of the spinal cord: assessment with MR imaging.
    Author: Yamashita Y, Takahashi M, Matsuno Y, Sakamoto Y, Oguni T, Sakae T, Yoshizumi K, Kim EE.
    Journal: Radiology; 1990 Jun; 175(3):849-54. PubMed ID: 2343135.
    Abstract:
    Seventy-six patients with persistent myelopathy secondary to chronic spinal cord injuries underwent examination with magnetic resonance (MR) imaging, the results of which were correlated with neurologic findings. Twenty-one patients received follow-up study during and after the acute stage; 55 patients were examined only at a chronic stage. Spinal cord abnormalities were seen in 48 patients according to five patterns: (a) normal signal intensity on T1- and T2-weighted images (pattern N/N, n = 28), (b) normal signal intensity on T1-weighted and hyperintensity on T2-weighted images (pattern N/Hi, n = 18), (c) hypointensity on T1-weighted and hyperintensity on T2-weighted images (pattern Lo/Hi, n = 17), (d) cord atrophy (n = 5), and (e) longitudinal syrinx formation with hypointensity on T1- and hyperintensity or isointensity on T2-weighted images (n = 8). Patients with pattern N/N had only slight neurologic damage and an excellent prognosis. Patients with pattern N/Hi had mild neurologic impairment, frequently associated with cord compression. Patients with pattern Lo/Hi had the worst prognosis. Atrophy was observed in patients with a long history of myelopathy.
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