4Eirsboer HS, Jssi SI, Runge VM, et al. Magnetic resonance imaging and other techniques In the diagnosis of multiple selerosis [J]. Arch Neural, 1995, 43: 658.
5Weber S, Loe DH, karlike SL, ET AL. Serial cranial and apinal cord MRI in MS [J ]. Ann Neural, 2002,32: 348.
