Treatment FAQ

how long does radioactive iodine treatment take

by Lavina Jacobi Published 3 years ago Updated 2 years ago
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The average time from surgery to radioactive iodine therapy was 3 months in Group A and 10.5 months in Group B. Patients in Group B tended to be older and have lower risk cancer than patients in Group A. Despite these differences in patient group characteristics, results demonstrated no differences in thyroid cancer recurrences between the groups.

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.

Full Answer

What are the long term side effects of radioactive iodine?

Long term side effects of radioactive iodine treatment vary depending on:

  • your age
  • other medical conditions
  • your dose of radioactive iodine

What to expect after radioactive iodine treatment?

You can expect to live a fairly normal life after radioactive iodine treatment but your life will probably not be exactly as it was before your procedure. For most people, this means that you can expect to live at 80-90% of your 'normal'.

What are the side effects of radioactive iodine therapy?

Temporary side effects of RAI may include:

  • Neck tenderness and swelling.
  • Nausea.
  • Swollen salivary glands.
  • Loss of taste or taste change.
  • Dry mouth/insufficient salivary production.
  • Dry eyes.
  • Excessive tearing from the eyes.

What are the risks of radioactive iodine treatment?

  • Stay at least six feet away from other people, including members of the public, family members, and co-workers, for three to 11 days. ...
  • Sleep apart from adults by at least six feet (a separate bedroom is recommended) and avoid sexual activity.
  • Avoid sleeping in the same bed with a pregnant woman, infant, or child for a period of six to 23 days. ...

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Can you go home after radioactive iodine treatment?

After radioactive iodine treatment for thyroid cancer. Having radioactive iodine treatment means you will be radioactive for several days afterwards. You will be able to go home from hospital when the radiation level in your body is at a safe level.

How long do you stay in the hospital after radioactive iodine treatment?

Most people are in the hospital for 1 night. Your doctor will tell you if you need to stay longer. You'll have another whole-body scan several days after your treatment. This helps your doctor see where the dose of radioactive iodine was taken up in your body.

Do you have to quarantine after taking radioactive iodine?

Depending on state regulations, patients may have to stay isolated in the hospital for about 24 hours to avoid exposing other people to radiation, especially if there are young children living in the same home.

Why do I have to stay away from people after radioactive iodine?

Radioactive iodine is passed through bodily fluids, so it is about reducing this risk to pass on to others. To keep this risk as low as possible we will ask you to avoid prolonged and close contact with friends/relatives for a period after your discharge from hospital.

Can I use my cell phone after radioactive iodine?

You will have to stay in your room for at least 1 to 2 hours after your treatment. You can use your cell phone or watch TV to help pass the time. You won't be able to have visitors during this time. You may not have any side effects from the treatment right after you get it, but you may have side effects later.

Do you lose your hair with radioactive iodine treatment?

Radioiodine does not cause hair loss.

Will I gain weight after radioactive iodine treatment?

Treatment of hyperthyroidism with RAI or anti-thyroid medications is associated with an increased risk of gaining weight and even developing obesity. This risk is slightly higher with RAI therapy compared to medications.

How long do you have to stay away from someone after radiation?

The radiation travels a very short distance, so the effects are mostly to the tumor. However, you may have to limit contact with other people for up to one week after treatment. It is especially important to avoid close contact with children and women who are pregnant.

How do you prepare for radioactive iodine?

You might need to have a low iodine diet for a few weeks before you have your treatment. This prepares the thyroid cells so that they can absorb the radioactive iodine. All food and drink contains some iodine. A low iodine diet means that you should avoid foods that have a high level of iodine in them.

Does radioactive iodine shorten your life?

Quality of life is worse at 6-10 years after radioactive iodine therapy of Graves' disease compared with treatment with antithyroid drugs or surgery. Quality of life is worse at 6-10 years after radioactive iodine therapy of Graves' disease compared with treatment with antithyroid drugs or surgery.

What are the long-term side effects of radioactive iodine?

NCI study finds long-term increased risk of cancer death following common treatment for hyperthyroidism. New study findings show an association between the dose of a common treatment for hyperthyroidism and risk of death from solid cancers.

Can I be around my child after radioactive iodine treatment?

RAI therapy does use a radioactive drug, but if the patient follows instructions provided by the doctor, RAI is considered safe for the family of the patient and ultimately for members of the public.

How does RAI work?

The thyroid is the most efficient organ at concentrating iodine. RAI treats hyperthyroidism by damaging or destroying thyroid cells through radiation. RAI is taken in an oral capsule form. You don’t need to be hospitalized unless the dose is very high, which is rarely needed.

How long after RAI can I breastfeed?

Pregnancy should be delayed at least six to 12 months after RAI treatment for thyroid cancer. Breast feeding should be stopped at least six weeks before RAI and should not be resumed. In the days immediately following your RAI therapy, be aware of these general precautions to prevent radioactive exposure to others.

What is the treatment for thyroid cancer?

The most common types of thyroid cancer (papillary and follicular) can usually be treated with large doses of radioactive iodine. (The dosages of RAI are much higher than with hyperthyroidism treatment.) The therapy is usually given after removal of the thyroid gland to destroy any remaining thyroid tissue. A “tracer” dose of radioactive iodine can ...

What hormones are needed for nervousness?

The thyroid gland needs iodine to make these hormones. The thyroid is the most efficient organ at concentrating iodine.

What is a tracer used for?

A “tracer” dose of radioactive iodine can also be used to track remaining thyroid tissue and/or cancer that could have spread to other parts of the body. These tests show if iodine concentrates in areas that contain thyroid cancer, and whether large amounts of RAI are needed to destroy the tumor implants.

How long does it take for iodine to flush out of the body?

Most patients need only one dose before their hyperthyroidism is resolved, which may take a few weeks to several months.

What are the side effects of RAI?

Temporary side effects of RAI may include: 1 Neck tenderness and swelling. 2 Nausea. 3 Swollen salivary glands. 4 Loss of taste or taste change. 5 Dry mouth/insufficient salivary production. 6 Dry eyes. 7 Excessive tearing from the eyes.

What is the I-123 isotope used for?

I-123 is the usual isotope used to take pictures and determine the activity of the intact thyroid gland ( Thyroid Scan and Radioactive Iodine Uptake, RAIU ), since it is harmless to thyroid cells. No special radiation precautions are necessary after a thyroid scan or RAIU using I-123. I-131 can also be used to take pictures of the thyroid gland, ...

Why is iodine important for the thyroid gland?

Iodine is essential for proper function of the thyroid gland, which use s it to make the thyroid hormones. The thyroid is equipped with an active system or “pump” for moving iodine into its cells, where it is concentrated as iodide. The thyroid gland is the only tissue in the body that takes up and holds onto iodine.

What is iodine used for?

Iodine, in the form of iodide, is made into two radioactive forms of iodine that are commonly used in patients with thyroid diseases: I-123 ( harmless to thyroid cells) and I-131 ( destroys thyroid cells ). The radiation emitted by each of these forms of iodine can be detected from outside the patient to gain information about thyroid function ...

What is the purpose of I-131?

THYROID CANCER – Large doses of I-131 are used to destroy thyroid cancer cells (see Thyroid Cancer brochure ). This is performed after the remaining thyroid cells ( including any cancer cells) are stimulated by raising TSH levels by either withdrawing the thyroid hormone pills or by treating with recombinant human TSH.

Can RAI cause thyroid cancer?

Hypothyroidism is a common side effect of RAI for hyperthyroidism and always seen after RAI for thyroid cancer. This is usually easily treated with thyroid hormone replacement (see Hypothyroidism brochure ). Some studies suggest a slight increase in thyroid cancers may be seen after RAI treatment for hyperthyroidism.

Is rai safe for X-rays?

RAI is safe to use in individuals who have had allergic reactions to seafood or X-ray contrast agents, since the reaction is to the compound containing io dine, not the iodine itself. RAI is given by mouth in pill or liquid form.

When can you stop breast feeding after I-131?

This protects the baby who would otherwise receive radioactive milk and the mother’s breasts which concentrate RAI. Breastfeeding must be stopped at least 6 weeks before administration of I-131 treatment and should not be restarted after administration of RAI, but can be safely done after future pregnancies.

What is the name of the service that takes up thyroid cells?

If you do, tell your doctor in Molecular Imaging and Therapy Service (MITS) before your treatment. This is sometimes called the Nuclear Medicine service. Radioactive iodine enters your bloodstream and is taken up by any thyroid- like cells. The radioactivity destroys the cancer cells.

How long does it take for thyroid to stop taking up radioactive iodine?

If you have too much iodine in your diet, it can stop the thyroid cells from taking up the radioactive iodine. Continue to follow this diet for 24 hours after your treatment is completed, or as instructed by your doctor. Read the resource for more information.

How long after radioactive iodine therapy can you get pregnant?

Pregnancy and radioactive iodine therapy. Don’t get pregnant or get your partner pregnant for at least 6 months after getting radioactive iodine therapy, or as long as your doctor tells you to. Use birth control after treatment for at least 6 months after getting this treatment.

How to treat thyrotropin alfa?

Your treatment plan will follow these steps that will take place over a few days: 1. On the first day, you’ll have blood tests. After those tests, you’ll see your doctor and get a thyrotropin alfa (Thyrogen ®) injection (shot) to help you get ready for your treatment.

Where does radioactive iodine leave the body?

Most of the extra radioactive iodine will leave your body through your urine (pee), and smaller amounts will leave your body in your saliva (spit), sweat, and bowel movements (poop).

How long before breast cancer treatment can you pump milk?

To prevent having radioactive iodine collect in your breast after your treatment, you’ll need to stop breastfeeding or pumping breast milk at least 6 to 12 weeks before your treatment.

How long does it take for thyroid pain to go away?

This is temporary and usually goes away within 8 weeks after your treatment. Try foods with different flavors to make sure you get the nutrition you need. Discomfort in your neck. This can happen during the first 2 to 3 weeks after your treatment, but it depends on the amount of thyroid tissue still in your neck.

What is the best treatment for thyroid cancer?

The first treatment option for thyroid cancer is surgical removal of the thyroid (thyroidectomy). Radioactive iodine therapy is recommended to many patients with thyroid cancer, especially those at increased risk for cancer recurrence after surgery.

Why do we need radioactive iodine?

Radioactive iodine initially is given to destroy any residual thyroid cancer cells left behind after surgery. Once routine in all thyroid cancer patients, newer guidelines by the American Thyroid Association have recommended more limited use of radioactive iodine therapy.

What is the I-123 form?

I-123 is the non-destructive form that does not damage the thyroid and is used in scans to take pictures of the thyroid (Thyroid Scan) or to take pictures of the whole body to look for thyroid cancer (Whole Body Scan). Table of Contents | PDF File for Saving and Printing.

Does radioactive iodine therapy affect thyroid cancer?

This study suggests that the timing of radioactive iodine therapy relative to thyroidectomy did not alter disease outcomes in thyroid cancer. This finding allows for more flexibility in timing when scheduling radioactive iodine therapy following thyroidectomy and, thus, patients can have more input on this timing relative to their life schedule.

How long does radioactive iodine affect sperm count?

Important to men is the fact that radioactive iodine can cause short-term reductions in sperm count for up to 2 years after your procedure (8). This may or may not be important to you based on your age, your gender, and whether or not fertility is something you are interested in but, again, it's worth knowing about.

How to avoid weight gain after RAI?

Your best bet to AVOID weight gain after RAI is to go into your procedure with a normal weight and to maintain a healthy lifestyle both before and after. Just realize that you will always be in a 'sensitive' category and you will be more likely to gain weight compared to people with their thyroid intact. #3.

How long can you live after iodine treatment?

You can expect to live a fairly normal life after radioactive iodine treatment but your life will probably not be exactly as it was before your procedure. For most people, this means that you can expect to live at 80-90% of your 'normal'.

How long does it take for a RAI to fade?

The good news is that this radioactivity does fade over a short period of time (usually 5 to 7 days) but the bad news is that you need to stay under certain precautions during this time.

What happens if you destroy your thyroid gland?

And, if you destroy your thyroid gland, it turns out that that may have consequences on your metabolism. Anectodally, you've probably already heard stories about people gaining weight after their procedure.

Can you gain weight after radioactive iodine treatment?

You may gain weight. This is probably not what you want to hear, especially if this is a procedure that is necessary for your health, but it's still important to know about it. You may gain weight after you undergo radioactive iodine treatment.

Can you survive after RAI?

You can obviously survive after RAI (otherwise they wouldn't do the procedure) but I want to teach you how to thrive afterward. And to key to getting there is to understand what happens to your body after this procedure and how it influences your thyroid function.

Exact Answer: After 2 to 3 months

Different serious thyroid infections are treated with Radioiodine. The Radioactive Iodine Treatment uses this Radioiodine to destroy or reduce the thyroid cells to a larger extent and also used to treat few specific diseases related to the thyroid.

How Long After Radioactive Iodine Treatment Will I Feel Better?

People usually feel better and changes may be noted from the fourth to eighth week of treatment but in cases where the infection is severe, it takes much longer than expected time to cure. The time it takes to shows its result, usually varies from person to person and relies on the type of hyperthyroidism caused and few other factors.

Why Does It Take That Long To Feel Better After Radioactive Iodine Treatment?

After the RAI treatment, you will radioactive and this will continue for few days. Other cells of the body also tend to receive this radiation but due to the small amount, it does produce any adverse effects. This treatment can be repeated once in three months until there is no sign of thyroid cancer in the scans.

Conclusion

Normal diet can be resumed after 2 days of RAI treatment. Make a practice to drink more amount of liquid and at least 1 cup of low-iodine liquid once each hour. You should follow this for nearly 3 to 4 days to feel comfortable. In almost all cases, people get recovered and thyroid hormones get back to normal level or slightly below normal.

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