Information AboutInternal Radiation Therapy

What is internal radiation therapy?

Internal radiation therapy is a form of treatment where a source of radiation is put inside your body. One form of internal radiation therapy is called brachytherapy. In brachytherapy, the radiation source is a solid in the form of seeds, ribbons, or capsules, which are placed in your body in or near the cancer cells. This allows treatment with a high dose of radiation to a smaller part of your body. Internal radiation can also be in a liquid form. You receive liquid radiation by drinking it, by swallowing a pill, or through an IV. Liquid radiation travels throughout your body, seeking out and killing cancer cells.Brachytherapy may be used with people who have cancers of the head, neck, breast, uterus, cervix, prostate, gall bladder, esophagus, eye, and lung. Liquid forms of internal radiation are most often used with people who have thyroid cancer or non-Hodgkin’s lymphoma. You may also get internal radiation along with other types of treatment, including external beam radiation, chemotherapy, or surgery.

What happens before my first internal radiation treatment?

You will have a 1- to 2-hour meeting with your doctor or nurse before you begin internal radiation therapy. At this time, you will have a physical exam, talk about your medical history, and maybe have imaging tests. Your doctor will discuss the type of internal radiation therapy that is best for you, its benefits and side effects, and ways you can care for yourself during and after treatment. You can then choose whether to have internal radiation therapy.

How is brachytherapy put in place?

Most brachytherapy is put in place through a catheter, which is a small, stretchy tube. Sometimes, it is put in place through a larger device called an applicator. When you decide to have brachytherapy, your doctor will place the catheter or applicator into the part of your body that will be treated.

What happens when the catheter or applicator is put in place?

You will most likely be in the hospital when your catheter or applicator is put in place. Here is what to expect:

  • You will either be put to sleep or the area where the catheter or applicator goes will be numbed. This will help prevent pain when it is put in.
  • Your doctor will place the catheter or applicator in your body.
  • If you are awake, you may be asked to lie very still while the catheter or applicator is put in place. If you feel any discomfort, tell your doctor or nurse so he or she can give you medicine to help manage the pain.
A type of radiation therapy in which radioactive material sealed in needles, seeds, wires, or catheters is placed directly into or near a tumor. Also called brachytherapy, internal radiation therapy, and radiation brachytherapy.
*Source: National Cancer Institute

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