Dynamic magnetic resonance imaging of the normal canine pituitary gland

The pituitary glands of six normal dogs were evaluated using dynamic magnet ic resonance imaging, T1 weighted images were obtained every 13 seconds for three minutes of three contiguous slices through the pituitary gland follo wing a bolus intravenous injection of gadolinium-DTPA. Contrast enhancement was seen initially in the region of the pituitary stalk at 52-65 seconds f ollowed by uniform enhancement at 104-143 seconds post injection. This patt ern of enhancement was seen in all subjects and is similar to that reported in humans.