How long does it take to review after 131 iodine treatment? Patients with differentiated thyroid cancer need to come to our Nuclear Medicine Clinic for follow-up checkup one month after 131 iodine treatment. On the day of the checkup, you need to fast and register for the checkup, so as to adjust the dose of Eugenol in time and observe the changes of blood picture, liver and kidney function. How many times does 131 iodine treatment need to be administered? If the patient has a large number of residual thyroid glands or a large number of metastases, he or she will need to be hospitalized several times for 131 iodine treatment. The interval between each 131 iodine treatment is usually 3-6 months to ensure that the patient has enough time to get some recovery and to avoid the cumulative effect of radiation hazards. However, the interval should not be too long, otherwise the potential growth of thyroid cancer lesions in the interstitial period will exceed the efficacy of treatment inhibition, and there is no limit to the total number of 131 iodine treatments with the ultimate goal of tumor-free survival. Can I have children after 131 iodine treatment? We recommend men to use contraception within six months after 131 iodine treatment and women to use contraception within one year after 131 iodine treatment. Women should follow up their thyroid function regularly after pregnancy or delivery and seek medical consultation if there is any abnormal index. What is the effectiveness of 131 iodine treatment for thyroid cancer? The most effective and reliable treatment for thyroid cancer (including residual lesions and metastases after surgery), other than surgical treatment, is 131 iodine therapy. The literature reports that patients with differentiated thyroid cancer who have undergone systematic 131 iodine treatment have an overall effectiveness rate of nearly 90%; some of these patients (especially those who are younger or have milder disease, smaller number of metastases and smaller lesions) can be cured, and most cases have their disease controlled and their quality of life improved. Can thyroid cancer be cured? Most of the patients can be cured after “thyroid surgery + postoperative 131 iodine therapy + thyroid hormone replacement suppression therapy”. Exclusion of thyroglobulin antibodies, inability to measure serum thyroglobulin in the TSH suppressed state (i.e. thyroglobulin <0.1ng/ml) and serum thyroglobulin <1ng/ml in the TSH stimulated state.