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将octreotide中的苯丙氨酸用酪氨酸替换合成[Tyr3]octreotide,对其进行了^131I标记。考察了氯胺T标记法中氯胺T和[Tyr3]octreotide的用量对标记率的影响,观察了Graves眼病相关炎症细胞对^131I-[Tyr3]octrotide的体外摄取情况。结果表明,对octreotide进行结构修饰后得到的[Tyr3]octreotide可以用于131I标记;氯胺T法对[Tyr3]octreotide进行131I标记时,氯胺T和[Tyr3]octreotide的最佳用量分别为