Methods:2 cases of pituitary hyperplasia in primary hypothyroidism were examined with MRI without and with Gd-DTPA administration.

• 方法:分别对2例原发性甲状腺功能减退患者行垂体MRI平扫及增强扫描,并在甲状腺素替代治疗3个月后行MRI复查。