甲状腺髓样癌依靠降钙素值的测定得以确定诊断和随访，但在分化较差的肿瘤中血清降钙素值低下，需要采用其他检测方法。CT和B超扫描可用以术前定位，但敏感度低。鉴于甲状腺髓样癌能合成和贮存生长抑素，且表达有生长抑素受体（SSTR），故可用111In标记奥曲肽作闪烁法检测。作 Medullary carcinoma of the thyroid depends on the determination of calcitonin value to confirm the diagnosis and follow-up, but serum calcitonin value is lower in poorly differentiated tumors, and other detection methods are needed. CT and B-scan can be used for preoperative positioning, but the sensitivity is low. Given that medullary thyroid carcinoma can synthesize and store somatostatin and express somatostatin receptors (SSTRs), 111In-labeled octreotide can be used for scintigraphic detection. Make