定量唾液腺显像评价放射性碘治疗后唾液腺功能

目的观察分化型甲状腺癌（DTC）在首次接受不同剂量131I治疗后唾液腺功能情况。方法将40例确诊为DTC患者按照应用131I剂量不同分为两组，应用放射性核素唾液腺动态显像，对131I治疗前及治疗后3个月唾液腺功能进行定量分析。结果低剂量组（2．96GBq）治疗后仅腮腺30min摄取率（UR30）明显受损（P〈0．05），高剂量组（5．55GBq）腮腺和颌下腺UR30、排泌分数（EF）、排泌率（ER）均明显降低，排泌时间（EP）显著延长（均P〈0．05）；腮腺较颌下腺受损更重。结论首次接受131I治疗DTC患者的唾液腺功能会受损，受损程度与使用131I剂量相关。

Quantitative evaluation of salivary gland dysfunction after radioiodine therapy using salivary gland scintigraphy

Objective To assess the variation of salivary gland function in differentiated thyroid carcinoma (DTC) patients receiving different doses of 131 I therapy in the first.Methods 40 DTC patients were divided into two groups according to the application 131I doses,salivary scintigraphy was performed with 99TcmO4-on DTC patients before and 3months after 131 I therapy.Quantitative analysis of salivary gland function were performed.Results In low dose group,only the uptake ratio of 30min (UR30) of bilateral parotid decreased ( P ＜ 0.05 ) ; but in high - dose group,the uptake ratio of 30min (UR30),excretion fraction ( EF ),excretion rate (ER) of bilateral parotid and submandibular glands were significantly decreased,excretion time(EP) significantly prolonged after 131 I therapy( all P ＜0.05) ;the parotid gland was more severely than the submandibular gland.Conclusion Salivary gland function was damaged of DTC patients receiving different doses of 131I therapy in the first,salivary gland dysfunction correlated well with the administered dose.