Methods Bone age X-ray features thyropenia ( TT 3 TT 4 ) and dysgnosia in 34 cases with hypothyroidism were comparatively analyzed .

方法对34例甲状腺功能 低下骨龄 落后 状况、X线 改变与甲状腺功能（TT3， TT4）以及智力障碍程度对比分析。