RESUMO
Objective To explore the optimal time for starting to drink plenty of water after 131I treatment in differentiated thyroid carcinoma(DTC) patients.Methods Totally 83 cases of DTC patients were randomly divided into three groups,and started to drink plenty of water at 12 h(group A),24 h(group B),and 36 h(group C) after treatment with 131I therapy.We measured and compared equivalent dose rate using the Inspector Alert gamma ray monitor at 1 meter in front of the patient's abdomen and neck at 6 h,12 h,24 h,36 h,48 h,72 h after taking 131I.We compared the discharge rate at different time and evaluated the curative effect.Results Equivalent dose rate of the abdomen at 24 h and 36 h after treatment and the discharge rate at 36 h and 48 h after treatment among three groups showed significant differences(P＜0.05).There were no statistically significant differences in the curative effect(P＞0.05).Conclusion Starting to drink plenty of water at 12 h after taking 131I can accelerate the decreasing of equivalent dose rate with no influence on the curative effect and improve the discharge rate at early.