If you have been taking anti-thyroid medications, you must stop at least three days before the therapy is given. Frequently, your doctor will recommend stopping anti-thyroid medication for five to seven days before therapy. You will be able to return home following radioactive iodine treatment. However, you should avoid prolonged, close contact with other people for several days, particularly pregnant women and small children. Most of the radioactive iodine that has not been absorbed leaves the body during the first two days following the treatment, primarily through the urine.
Small amounts will also be excreted in saliva, sweat, tears, vaginal secretions, and feces. If your work or daily activities involve prolonged contact with small children or pregnant women, you should wait several days after your treatment to resume these activities. Patients with infants at home should arrange for care to be provided by another person for the first several days after treatment.
Your radiologist can be more specific for your given situation, but this is usually for two to five days. Your treatment team will give you a list of other precautions to take following your treatment with I The following guidelines comply with the Nuclear Regulatory Commission:.
Patients who need to travel immediately after radioactive iodine treatment are advised to carry a letter of explanation from their physician. Radiation detection devices used at airports and federal buildings may be sensitive to the radiation levels present in patients up to three months following treatment with I Depending on the amount of radioactivity administered, your endocrinologist or radiation safety officer may recommend continued precautions for up to several weeks after treatment.
Doctors do not use radioiodine therapy in pregnant patients. Depending on the stage of pregnancy, I given to the mother may damage the baby's thyroid gland. If you are pregnant, discuss this issue with your doctor. When given to a nursing mother, radioactive iodine can reach a baby through her breast milk.
Most physicians feel that this procedure should not be used in women who are breastfeeding unless they are willing to stop breastfeeding. Also, you should avoid getting pregnant for at least six to 12 months after treatment. Hyperthyroidism treatment is almost always done on an outpatient basis because the dose required is relatively small.
The radioiodine I is swallowed in a single capsule or liquid dose and is quickly absorbed into the bloodstream in the gastrointestinal GI tract.
Although the radioactivity remains in the thyroid for some time, it is greatly diminished within a few days. The effect of this treatment on the thyroid gland usually takes between one and three months to develop. Maximum benefit occurs three to six months after treatment. Usually, a single dose is successful in treating hyperthyroidism. Iodine has dispersed around the world, and is now found at very low levels in the environment.
Iodine in fallout fallout Radioactive material in the air from a nuclear explosion that will cool into dust-like particles and fall to the ground. I is often used to treat thyroid cancer. In medicine, I is supplied in capsules or liquid form for patients to swallow. Learn about I used in nuclear medicine.
External exposure to large amounts of iodine can cause burns to the eyes and skin. The thyroid gland uses iodine to produce thyroid hormones and cannot distinguish between radioactive iodine and stable nonradioactive iodine. If iodine were released into the atmosphere, people could ingest it in food products or water, or breathe it in. In addition, if dairy animals consume grass contaminated with iodine, the radioactive iodine will be incorporated into their milk.
Consequently, people can receive internal exposure from drinking the milk or eating dairy products made from contaminated milk. If not treated, hypothyroidism can cause brain damage. KI potassium iodide is available without a prescription.
People should only take KI potassium iodide on the advice of public health or emergency management officials. Skip directly to site content Skip directly to page options Skip directly to A-Z link.
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Most doctors also recommend that you follow a low iodine diet for 1 or 2 weeks before treatment. This means avoiding foods that contain iodized salt and red dye 3, as well as dairy products, eggs, seafood, and soy. Your body will give off radiation for some time after you get RAI therapy. Depending on the dose of radioiodine used and where you are being treated, you might need to be in the hospital for a few days after treatment, staying in a special isolation room to prevent others from being exposed to radiation.
Some people may not need to be hospitalized. Once you are allowed to go home after treatment, you will be given instructions on how to protect others from radiation exposure and how long you need to take these precautions.
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