Slideshow
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Uses of Radiation Therapy
RT can be used to eliminate lingering cancer cells, prevent cancer metastasis, and shrink tumors for symptom relief or tumor resection.2
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Benefits of Radiation Therapy
The benefits of RT include decreased cost, no risks of anesthesia or infection, no adverse effects from surgery or need for rehabilitation, and painless treatment.2
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Types of Radiation Therapy: Teletherapy
Teletherapy, also known as external beam radiation, is a non-invasive outpatient therapy targeting a specific region of the body.1 The process can be repeated over weeks to months as fractionation treatment in small fractions over time.3
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Types of Radiation Therapy: Brachytherapy
Brachytherapy is a sealed source of radiation administered directly into or near a tumor that travels into the blood to kill cancerous cells.1
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Side Effects of Radiation Therapy
Systemic effects may develop based on the volume of tissue irradiated, dose of fractionation, radiation fields, and individual susceptibility.1
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Acute Toxicities
Acute toxicities, such as mucositis or erythema multiforme (pictured), occur during treatment and are due to damage of rapidly dividing normal cells. These toxicities can typically be alleviated by interrupting treatment.1,3
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Slide
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Types of Radiation Therapy: Systemic Therapy
In systemic radiation therapy, patients either receive an injection or swallow a radioactive substance that is bound to a monoclonal antibody to aid in targeting the tumor.3
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Chronic Toxicities
Chronic toxicities, such as fibrosis (shown here), memory loss, infertility and secondary cancers may occur for months or years after treatment, dependent on treatment location, dose, and general medical condition of the patient.3
Radiation therapy (RT) utilizes high energy beams or charged particles to damage DNA and generate free radicals from cell water that can harm cancer cells.1 Cancer cells are more vulnerable to radiation due to the faster rate of cancer cell division.1 This slideshow reviews the uses, benefits, types, side effects, and toxicities associated with radiation therapy.