Radiation Therapy (Radiotherapy) - FAQs, Side Effects & Cost

What is radiotherapy?

Radiotherapy, or radiation therapy, is the use of radiation to safely treat and manage cancer. Radiation oncologists and Radiotherapists use radiation to eradicate cancer cells, reduce their growth or relieve symptoms of cancer.

Radiotherapy treats cancer by damaging cancer cells while limiting the impact to healthy cells. It works because cancer cells are more sensitive to radiation than healthy, normal cells. When a small dose of radiation is given each day over several weeks, normal cells can recover from the radiation, but cancer cells cannot.

Radiotherapy is typically a painless treatment, similar to having an x-ray, and is only delivered to the part of the body being treated.

What are the side effects of radiotherapy?

Radiotherapy treatment is unique to each person and can affect the body in different ways. The most common side effect is fatigue, a feeling of exhaustion or lack of energy. Some people may also experience bowel or bladder irritation as they progress through treatment.

As radiation is targeted to a specific area of the body, other side effects are often contained to the area being treated. Site-specific effects may include skin irritation (redness, dryness, itching, peeling or blistering), pain, swelling and hair loss in the area being treated.

The below table provides examples of other side effects some people may experience, depending on the area being treated.

Radiotherapy (Radiation Therapy) Side Effect	Treatment Site
Nausea and vomiting	Abdomen
Difficulty swallowing	Throat or oesophagus
Loss of taste, dry mouth, oral thrush, mouth ulcers	Head and neck
Female fertility	Abdomen, pelvis or pituitary gland
Male fertility	Pelvis or testes
Erectile function	Pelvis

How long do side effects last?

Although most radiation therapy side effects are temporary and resolve after treatment has finished, there is a possibility that long-term effects may occur. Your radiation oncologist and treatment team will discuss the type of side effects you may experience before your treatment begins.

Once you have commenced treatment, it's important to let your treating team know of any effects you notice, and those that are making you uncomfortable. At Icon Cancer Centre, your comfort is a priority; we are always there to help find ways to manage any side effects you experience.

How is radiotherapy delivered?

Radiotherapy treatment can be delivered on its own, or in combination with other forms of treatment, such as chemotherapy, hormone therapy and surgery. It's commonly undertaken as an outpatient service—these are medical services that do not require hospital admission.

At Icon, we use cutting-edge radiotherapy techniques and technology to deliver pinpoint accurate radiation to the tumour. Our technology and expertise allow us to accurately treat all cancer types of various sizes and locations.

How long does radiation treatment take?

Treatment is usually given in daily intervals (Monday to Friday) over several weeks, allowing enough radiation to target cancer cells while providing healthy cells enough time to recuperate. A radiation therapy treatment session may only last 15 to 20 minutes.

A single course of radiation therapy is unique to each person and their condition. This includes the site and stage of the disease, type of disease, a person’s age and general health.

Common radiotherapy techniques

Adaptive Radiotherapy Deep Inspiration Breath Hold External Beam Radiotherapy Hydrogel HyperArc Intensity Modulated Radiotherapy Low-Dose Radiotherapy (LDRT) RapidArc Dynamic and Hypersight RapidArc Dynamic Stereotactic Radiotherapy Superficial Radiotherapy Surface Guided Radiotherapy Triggered Imaging Volumetric Modulated Arc Therapy

Frequently asked questions

You don't need to stay away from other people after external beam radiation therapy as it doesn't make you radioactive. It's perfectly safe for you to be with and around other people, including children, throughout your treatment.
Radiotherapy is a local treatment, meaning it only affects the area of the body where the radiation is targeted. Unless your radiation treatment is targeted at an area where hair grows, such as your scalp or face, you will not lose your hair. People having radiation therapy for breast cancer may find their underarm hair will fall out if it is near the radiated area, however it will grow back in time.
Yes, it's safe for you to drive after you receive radiation therapy treatment. However, if you feel unfit or unwell to do so, it’s important to advise your treatment team immediately.
This depends on where you are being treated. If you're a biological female having radiation therapy to the abdomen or pelvis, the amount of radiation absorbed by the ovaries will determine the potential impact on your fertility. Radiation to the pituitary gland may also influence fertility, as the pituitary gland normally signals the ovaries to ovulate. Radiation to both testes in men is rare, however if you require this therapy your fertility may be affected. Please speak with your radiation oncologist should you or your partner wish to become pregnant, or if you have fertility concerns.
It's important you are not pregnant at any time during radiotherapy, as x-rays for used for positioning can harm the foetus. If you think you may be pregnant at any time, it's extremely important to discuss this with a member of the radiotherapy team. If you wish to become pregnant after your treatment please discuss this with your radiation oncologist prior to commencing.
For men having radiotherapy to their pelvic region, it's advised that you do not father children during treatment. Radiation therapy may damage your sperm, which can lead to birth abnormalities. If you wish to father children after this treatment, please discuss this with your radiation oncologist prior to commencing.
If you have radiotherapy to your abdominal region, you may get an upset stomach and feel nauseated. This will usually resolve when your course of treatment is completed. If you notice you're feeling nauseated for a prolonged period of time, please inform our team so we can suggest ways to manage this.