Qiuli Zhang1,
  Cuiping Mao1, Ming Zhang1, Jingxia Dang2,
  Jiaoting Jin2
 1Department
  of Radiology, the First Affiliated Hospital of Medcine College of Xi'an
  JiaoTong University, Xi'An, ShaanXi, China; 2Department of
  Neurology, the First Affiliated Hospital of Medcine College of Xi'an JiaoTong
  University, Xi'An, ShaanXi, China
The underlying mechanisms of degeneration process in ALS are still unclear. This study use FSL-VBM in order to detect potential spread characteristics of upper motor neurons, through the topography of gray matter changes.