Objective To evaluate the efficacy of octreotide in the diagnosis and treatment of pituitary thyrotropin-secreting adenoma.

Objective: to establish a canine model of portal hypertension with esophageal varices, and explore the effects of somatostatin and octreotide on portal pressure and vasoactive substance.

Conclusions a higher label rate can be acquired without practicing further purification procedures with this method. Thus, it is applicable to scintigraphy of tumor somatostatin receptor (SSTR).