Figure 10. (A-D) MRI of sequential sequences of the stalk and pituitary gland in sagittal orientation following the intravenous administration of gadolinium. (A) Appearance prior to gadolinium. (B) Following gadolinium, the posterior pituitary is the first structure to show contrast enhancement. (C) This is followed by the pituitary stalk (arrow) and then finally (D) the anterior pituitary. (From Yuh et al, AJNR 15: 101-108, 1994.)