Treatment FAQ

how radiation treatment works

by Prof. Rozella Reichert Published 2 years ago Updated 2 years ago
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Radiation works by making small breaks in the DNA inside cells. These breaks keep cancer cells from growing and dividing and cause them to die. Nearby normal cells can also be affected by radiation, but most recover and go back to working the way they should.

Radiation works by making small breaks in the DNA inside cells. These breaks keep cancer cells from growing and dividing and cause them to die. Nearby normal cells can also be affected by radiation, but most recover and go back to working the way they should.Dec 27, 2019

How long does it take to recover from radiation treatment?

The general effects of radiation therapy like fatigue, nausea, and headaches resolve fairly quickly after treatment. Your body just needs time to process the radiation but can recover within a few weeks. Delayed side effects of radiation therapy, on the other hand, may require further treatment to alleviate.

What to expect during and after radiation treatments?

  • Radiation cystitis. If the radiation damages the lining of the bladder, radiation cystitis can be a long-term problem that causes blood in the urine or pain when passing urine.
  • Urinary incontinence. ...
  • Fistulas. ...

What to expect when having radiation therapy?

What to Expect During Radiation Therapy Treatment

  • Before Radiation Therapy. At Affiliated Oncologists, each treatment plan is created to meet the individual needs of the patient, but there are some steps that are taken for each patient.
  • During Radiation Therapy. There are two main types of radiation therapy: external beam radiation and internal radiation therapy.
  • After Radiation Therapy. ...

What is radiation therapy and how is it used to treat cancer?

Radiation therapy (also called radiotherapy) is a cancer treatment that uses high doses of radiation to kill cancer cells and shrink tumors . At low doses, radiation is used in x-rays to see inside your body, as with x-rays of your teeth or broken bones. At high doses, radiation therapy kills cancer cells or slows their growth by damaging their DNA.

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How is radiation treatment performed?

During external beam radiation therapy, you're positioned on a table and a large machine moves around you sending beams of radiation into precise points in your body. External beam radiation therapy is usually conducted using a linear accelerator — a machine that directs high-energy beams of radiation into your body.

Is radiation treatment painful?

Does radiation therapy hurt? No, radiation therapy does not hurt while it is being given. But the side effects that people may get from radiation therapy can cause pain and discomfort. This booklet has a lot of information about ways that you and your doctor and nurse can help manage side effects.

At what stage of cancer is radiotherapy used?

Radiotherapy may be used in the early stages of cancer or after it has started to spread. It can be used to: try to cure the cancer completely (curative radiotherapy) make other treatments more effective – for example, it can be combined with chemotherapy or used before surgery (neo-adjuvant radiotherapy)

What happens to the body during radiation therapy?

The most common early side effects are fatigue (feeling tired) and skin changes. Other early side effects usually are related to the area being treated, such as hair loss and mouth problems when radiation treatment is given to this area. Late side effects can take months or even years to develop.

What are 5 harmful effects of radiation?

Here are a few common health effects or harmful effects of radiation on the human body.Hair. Loss of hair fall occurs when exposure to radiation is higher than 200 rems.Heart and Brain. Intense exposure to radiation from 1000 to 5000 rems will affect the functioning of the heart. ... Thyroid. ... Blood System. ... Reproductive Tract.

Do tumors grow back after radiation?

Normal cells close to the cancer can also become damaged by radiation, but most recover and go back to working normally. If radiotherapy doesn't kill all of the cancer cells, they will regrow at some point in the future.

Can cancer spread during radiotherapy?

There are preclinical and clinical reports showing that focal radiotherapy can both increase the development of distant metastasis, as well as that it can induce the regression of established metastases through the abscopal effect.

Is radiation better than chemo?

The radiation beams change the DNA makeup of the tumor, causing it to shrink or die. This type of cancer treatment has fewer side effects than chemotherapy since it only targets one area of the body.

Can radiotherapy cure cancer alone?

Radiation therapy can be given alone or as a part of a treatment plan that includes different treatments. Some of the ways radiation therapy is used include: As the primary treatment. Often, the goal of radiation therapy is to get rid of all the cancer and keep it from coming back.

What is the success rate of radiation therapy?

“In fact, based on the literature reviewed, it appears that external-beam radiation therapy is a superior treatment in some cases. “When patients are treated with modern external-beam radiation therapy, the overall cure rate was 93.3% with a metastasis-free survival rate at 5 years of 96.9%.

What are the worst side effects of radiotherapy?

Treatment areas and possible side effectsPart of the body being treatedPossible side effectsBrainFatigue Hair loss Memory or concentration problems Nausea and vomiting Skin changes Headache Blurry visionBreastFatigue Hair loss Skin changes Swelling (edema) Tenderness5 more rows•Jan 11, 2022

How many sessions of radiotherapy is normal?

Most people have 5 treatments each week (1 treatment a day from Monday to Friday, with a break at the weekend). But sometimes treatment may be given more than once a day or over the weekend.

What Is Radiation Therapy?

Radiation therapy uses high-energy particles or waves, such as x-rays, gamma rays, electron beams, or protons, to destroy or damage cancer cells.Yo...

Who Gets Radiation Therapy?

More than half of people with cancer get radiation therapy. Sometimes, radiation therapy is the only cancer treatment needed.

What Are The Goals of Radiation Therapy?

Most types of radiation therapy don’t reach all parts of the body, which means they’re not helpful in treating cancer that has spread to many place...

How Is Radiation Therapy given?

Radiation therapy can be given in 3 ways: 1. External radiation (or external beam radiation): uses a machine that directs high-energy rays from out...

Who Gives Radiation Therapy Treatments?

During your radiation therapy, a team of highly trained medical professionals will care for you. Your team may include these people: 1. Radiation o...

Does Radiation Therapy Cause Cancer?

It has long been known that radiation therapy can slightly raise the risk of getting another cancer. It’s one of the possible side effects of treat...

Does Radiation Therapy Affect Pregnancy Or Fertility?

Women: It’s important not to become pregnant while getting radiation – it can harm the growing baby. If there’s a chance you might become pregnant,...

Questions to Ask About Radiation Therapy

Before treatment, you’ll be asked to sign a consent form saying that your doctor has explained how radiation therapy may help, the possible risks,...

Will I Be Radioactive During Or After External Radiation Treatment?

External radiation therapy affects cells in your body only for a moment. Because there’s no radiation source in your body, you are not radioactive...

How does radiation help cancer?

When radiation is combined with surgery, it can be given: 1 Before surgery, to shrink the size of the cancer so it can be removed by surgery and be less likely to return. 2 During surgery, so that it goes straight to the cancer without passing through the skin. Radiation therapy used this way is called intraoperative radiation. With this technique, doctors can more easily protect nearby normal tissues from radiation. 3 After surgery to kill any cancer cells that remain.

Why do people with cancer need radiation?

Why People with Cancer Receive Radiation Therapy. Radiation therapy is used to treat cancer and ease cancer symptoms . When used to treat cancer, radiation therapy can cure cancer, prevent it from returning, or stop or slow its growth. When treatments are used to ease symptoms, they are known as palliative treatments.

What is intraoperative radiation therapy?

During surgery, so that it goes straight to the cancer without passing through the skin. Radiation therapy used this way is called intraoperative radiation.

What is brachytherapy with liquid source?

Learn more about brachytherapy. Internal radiation therapy with a liquid source is called systemic therapy. Systemic means that the treatment travels in the blood to tissues throughout your body, seeking out and killing cancer cells.

What is the best radiation treatment for thyroid cancer?

A systemic radiation therapy called radioactive iodine, or I-131, is most often used to treat certain types of thyroid cancer.

What is the treatment for cancer that has spread to the bone called?

Pain from cancer that has spread to the bone can be treated with systemic radiation therapy drugs called radiopharmaceuticals.

What is external beam radiation therapy?

External Beam Radiation Therapy. External beam radiation therapy comes from a machine that aims radiation at your cancer. The machine is large and may be noisy. It does not touch you, but can move around you, sending radiation to a part of your body from many directions.

What is the purpose of radiation therapy?

Radiation Therapy (irradiation or radiotherapy) is the use of high energy radiation, primarily x-rays, to kill cancer cells. In high doses, radiation causes damage to cells by interfering with the cell’s ability to grow and reproduce. Cells that are growing and multiplying are very sensitive to the effects of radiation.

Why is radiation treatment important?

When radiation treatments are given for cancer, special care is taken to spare as much normal tissue as possible from radiation exposure. The radiation dose is carefully measured and aimed at the tumor to kill as many cancer cells with as little damage to normal tissue as possible.

Why are cancer cells more likely to be damaged by radiation?

Cells that are growing and multiplying are very sensitive to the effects of radiation. Because cancer cells reproduce more frequently than normal cells, they are more likely to be damaged by radiation. Normal cells can also be affected by radiation, but normal cells tend to be able to recover from radiation damage. YouTube.

What is external beam radiation?

external beam: an external beam radiation therapy machine outside your body aims the radiation at your cancer cells. internal or brachytherapy: Sometimes this type of radiation therapy is also called liquid radiation, because the radiation is placed inside your body, near the cancer cells. Most patients receive external beam radiation.

When is radiation given?

When radiation is combined with surgery, the radiation treatments may be given before or after surgery. When it is done before surgery it is used to shrink the size of a tumor to make removal easier. More commonly the radiation treatments are given after surgery to reduce the chance that the cancer will come back, among other reasons.

Can radiation therapy be used for cancer?

Radiation is also used to treat some benign (non-cancerous) conditions. For some patients, radiation therapy will be the only treatment necessary for their cancer, but very often it is done along with surgery and/or chemotherapy.

Can normal cells recover from radiation?

Normal cells can also be affected by radiation, but normal cells tend to be able to recover from radiation damage. If playback doesn't begin shortly, try restarting your device. Videos you watch may be added to the TV's watch history and influence TV recommendations.

Why do people get radiation therapy?

Why it's done. More than half of all people with cancer receive radiation therapy as part of their cancer treatment. Doctors use radiation therapy to treat just about every type of cancer. Radiation therapy is also useful in treating some noncancerous (benign) tumors.

How does radiation damage cells?

Radiation therapy damages cells by destroying the genetic material that controls how cells grow and divide. While both healthy and cancerous cells are damaged by radiation therapy, the goal of radiation therapy is to destroy as few normal, healthy cells as possible.

What is the treatment for cancer?

Radiation therapy. External beam radiation uses high-powered beams of energy to kill cancer cells. Beams of radiation are precisely aimed at the cancer using a machine that moves around your body. Radiation therapy is a type of cancer treatment that uses beams of intense energy to kill cancer cells. Radiation therapy most often uses X-rays, but ...

What type of radiation is used in X-rays?

The term "radiation therapy" most often refers to external beam radiation therapy. During this type of radiation, the high-energy beams come from a machine outside of your body that aims the beams at a precise point on your body.

How long does radiation treatment last?

Expect each treatment session to last approximately 10 to 30 minutes. In some cases, a single treatment may be used to help relieve pain or other symptoms associated with more-advanced cancers. During a treatment session, you'll lie down in the position determined during your radiation simulation session.

How long does it take for cancer to respond to radiation?

In some cases, your cancer may respond to treatment right away. In other cases, it may take weeks or months for your cancer to respond.

What is the purpose of neoadjuvant therapy?

Before surgery, to shrink a cancerous tumor (neoadjuvant therapy) After surgery, to stop the growth of any remaining cancer cells (adjuvant therapy) In combination with other treatments, such as chemotherapy, to destroy cancer cells. In advanced cancer to alleviate symptoms caused by the cancer.

How long does radiation therapy last?

It is the most common radiation therapy treatment for cancer. Each session is quick, lasting about 15 minutes. Radiation does not hurt, sting, or burn when it enters the body.

What to expect when getting radiation therapy?

What to Expect When Having Radiation Therapy. It is normal to feel worried or overwhelmed when you learn that you will need radiation therapy. However, learning more about this type of cancer treatment may help you feel more prepared and comfortable.

What type of doctor is responsible for radiation therapy?

Radiation oncologist. This type of doctor specializes in giving radiation therapy to treat cancer. A radiation oncologist oversees radiation therapy treatments. They work closely with other team members to develop the treatment plan. Radiation oncology nurse.

What is simulation in radiation therapy?

Simulating and planning treatment. Your first radiation therapy session is a simulation. This means it is a practice run without giving radiation therapy. Your team will use imaging scans to identify the tumor location.

Why is it important to be in the same position for radiation?

It is important for your body to be in the same position for each treatment. Your radiation oncology team cares about your comfort. Talk with the team to find a comfortable position that you can be in every time you come in for radiation therapy.

How often should you check for radiation?

During your treatment, your radiation oncologist will check how well it is working. Typically, this will happen at least once a week. If needed, they may adjust your treatment plan.

What is informed consent for radiation?

Giving permission for radiation therapy. If you choose to receive radiation therapy, your health care team will ask you to sign an "informed consent" form. Signing the document means: Your team gave you information about your treatment options. You choose to have radiation therapy.

How does radiation work?

The radiation works by damaging the DNA of the cancerous cells, which causes those cells, or targets, to shrink and die. Radiation can also affect nearby healthy cells, but they usually recover at a faster rate than the cancer cells.

What is image guided radiotherapy?

Image Guided Radiotherapy. There are many different techniques used to deliver radiation to tumors. In the positioning of the patient prior to and during treatment, images are used for accuracy and to detect any movement.

What is radiosurgery software?

Specialized and dedicated radiosurgery software offers many benefits to the cancer treatment team and therefore to their patients. Clinicians can verify and validate important functions like avoiding radiation to important structures such as the brain stem or facial nerve.

How long does radiation treatment take?

A visit usually lasts 30 minutes to an hour, most of which is spent getting you in the correct position. The treatment itself usually takes 5 minutes or less.

What kind of radiation therapy is used for cancer?

The kind of radiation therapy you get depends on things like: The two main types of radiation therapy for cancer are: External beam radiation therapy . A large machine aims radiation beams from outside your body to a cancer tumor from many angles. It can treat a variety of cancers.

How to treat cancer before surgery?

The aim is to treat your cancer by slowing or stopping tumor growth. Your doctor may sometimes suggest you get radiation therapy to shrink a tumor before you get surgery. Or they may recommend it after surgery to keep a tumor from coming back. If cancer cells have spread to other parts of your body, radiation therapy can kill them ...

What is external beam radiation therapy?

External beam radiation therapy. A large machine aims radiation beams from outside your body to a cancer tumor from many angles. It can treat a variety of cancers. The machine can be quite noisy, but it won't touch you. It sends radiation to the specific area where there's cancer.

How does brachytherapy work?

They put it inside you using a small tube called a catheter or a device known as an applicator. Brachytherapy usually treats head, neck, breast, cervix, endometrial, prostate, and eye cancers. If your doctor uses a low dose of radiation in brachytherapy, they'll remove the implant after several days. If they use a higher dose, they usually take it ...

What is the treatment for cancer?

Radioembolization. Cancer Caused by Radiation Therapy. If you've been diagnosed with cancer, your doctor may suggest you get radiation therapy. It's a common treatment that shrinks tumors and kills cancer cells -- and might be the only one you need to tackle your disease.

How long does it take for radiation to go away?

If they use a higher dose, they usually take it out after 10 to 20 minutes, and you'll get two doses a day for around 2 to 5 weeks. Depending on the type and location of your cancer and the other treatments you've had, your doctor may also place an implant in your body permanently and the radiation will weaken with time.

How does radiation work?

How therapeutic radiation works. “Therapeutic radiation, when it’s exposed to a targeted area in the body, will cause damage to the DNA on a cellular level,” explains Dr. Neisler. “That DNA damage translates to cell death. That is how radiation is effective for cancer treatment.”.

What is radiation treatment?

Radiation treatment is highly tailored to each patient based on his or her age, the cancer’s stage, the location of the cancer, and the type of normal tissue near the cancer site. There are different forms of radiation treatment, including: External beam radiation therapy, which is given by wave or machine.

Is radiation good for cancer?

That is how radiation is effective for cancer treatment.”. Radiation can damage both cancer cells and normal, healthy tissue in the area surrounding the cancer site. The good news is normal tissue can repair DNA damage much more effectively than cancer cells can. “Over time, normal tissues are able to survive the radiation treatments ...

Can radiation be used to treat cancer?

We are exposed to radiation every day from sources like the soil, airplane travel, cell phones and televisions, but radiation – a spectrum of energy – can also be used to treat cancer. Radiation is used in two different ways to treat cancer, explains Kim Vu Neisler, M.D., a radiation oncologist at Piedmont: Curative treatment: To cure the cancer.

How does radiation therapy work?

How Radiation Therapy Works. Radiation therapy damages the genetic material of cancer cells to kill them or slow their growth. More than half of people with cancer get it.

What is a radiation therapist?

Radiation therapist. A person trained to work the devices that give radiation therapy. Dosimetrist. Someone who arranges the right dose of radiation therapy for you. Medical physicist:A person who uses their physics knowledge for radiation treatments, devices, and technology.

What type of cancer is treated with radiation?

Types of Cancer It Treats. External beam radiation therapy can treat many cancers, including breast, colorectal, esophageal, head, neck, lung, and prostate cancer. Brachytherapy is used for some of the same cancers that external beam radiation therapy can treat. Examples are head, neck, breast, and prostatecancers.

What is the main doctor for radiation therapy?

Many doctors and health experts are part of a cancer care team. For radiation therapy, your main doctor is a radiation oncologist. They specialize in radiation oncology and lead a group of medical professionals that can include: Radiation therapy nurse. A registered nurse who can help educate you about treatment.

What is radiation oncology?

Radiation oncology is the area of medicine that uses radiation to treat cancer and other diseases. Find out how it works.

How long does radiation stay in your body?

The radiation source may stay inside your body for just a few minutes, several days, or longer. You may also hear your doctor talk about another kind of internal radiation therapy called "systemic radiation.". You take liquid radiation through your mouthor a vein.

What is the treatment for cancer?

If you have cancer, you might see a doctor who specializes in radiationoncology. It's an area of medicine that uses "radiation therapy" -- a treatment that focuses high-energy waves on your body to kill cancer cells. Your doctor will decide if it's right for you based on the type and stage of your cancer, plus other health conditions you have.

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Overview

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Radiation therapy is a type of cancer treatment that uses beams of intense energy to kill cancer cells. Radiation therapy most often uses X-rays, but protons or other types of energy also can be used. The term "radiation therapy" most often refers to external beam radiation therapy. During this type of radiation, the high-energy bea…
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Why It's Done

  • More than half of all people with cancer receive radiation therapy as part of their cancer treatment. Doctors use radiation therapy to treat just about every type of cancer. Radiation therapy is also useful in treating some noncancerous (benign) tumors.
See more on mayoclinic.org

Risks

  • Radiation therapy side effects depend on which part of your body is being exposed to radiation and how much radiation is used. You may experience no side effects, or you may experience several. Most side effects are temporary, can be controlled and generally disappear over time once treatment has ended. Some side effects may develop later. For example, in rare circumsta…
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How You Prepare

  • Before you undergo external beam radiation therapy, your health care team guides you through a planning process to ensure that radiation reaches the precise spot in your body where it's needed. Planning typically includes: 1. Radiation simulation.During simulation, your radiation therapy team works with you to find a comfortable position for you during treatment. It's imperative that you li…
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What You Can Expect

  • External beam radiation therapy is usually conducted using a linear accelerator — a machine that directs high-energy beams of radiation into your body. As you lie on a table, the linear accelerator moves around you to deliver radiation from several angles. The linear accelerator can be adjusted for your particular situation so that it delivers the precise dose of radiation your doctor has order…
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Results

  • If you're receiving radiation to a tumor, your doctor may have you undergo periodic scans after your treatment to see how your cancer has responded to radiation therapy. In some cases, your cancer may respond to treatment right away. In other cases, it may take weeks or months for your cancer to respond. Some people aren't helped by radiation therapy.
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Clinical Trials

  • Explore Mayo Clinic studiesof tests and procedures to help prevent, detect, treat or manage conditions.
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