(来学网)颈椎管狭窄的CT诊断标准为正中矢状径小于
  • A.
    (来学网)10mm
  • B.
    (来学网)11mm
  • C.
    (来学网)12mm
  • D.
    (来学网)13mm
  • E.
    (来学网)15mm