Methods The signal intensity of posterior pituitary lobe in low field MRI about 193 healthy subjects,31 with central diabetes insipidus (CDI) and 33 with pulmonary cancers were measured, and compared with the signal intensity of pons.

• 方法：低场 MRI正中矢状位 T1W1图像上测量正常人（193例）、中枢性尿崩症（31例）及肺癌（33例）的垂体后叶信号强度，并与桥脑的信号强度相比较。