Definitions for brachytherapy

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Wiktionary

  1. brachytherapy(Noun)

    Radiotherapy using radioactive sources positioned within (or close to) the treatment volume.

  2. Origin: From βραχύς + therapy from θεραπεία.

Freebase

  1. Brachytherapy

    Brachytherapy, also known as internal radiotherapy, sealed source radiotherapy, curietherapy or endocurietherapy, is a form of radiotherapy where a radiation source is placed inside or next to the area requiring treatment. Brachytherapy is commonly used as an effective treatment for cervical, prostate, breast, and skin cancer and can also be used to treat tumours in many other body sites. Brachytherapy can be used alone or in combination with other therapies such as surgery, External Beam Radiotherapy and chemotherapy. Brachytherapy contrasts with unsealed source radiotherapy in which a therapeutic radioisotope is injected into the body to chemically localize to the tissue which requires destruction. It also contrasts to EBRT, in which high-energy x-rays are directed at the tumour from outside the body. Brachytherapy instead involves the precise placement of short-range radiation-sources directly at the site of the cancerous tumour. These are enclosed in a protective capsule or wire which allows the ionizing radiation to escape to treat and kill surrounding tissue, but prevents the charge of radioisotope from moving or dissolving in body fluids. The capsule may be removed later, or it may be allowed to remain in place. A key feature of brachytherapy is that the irradiation only affects a very localized area around the radiation sources. Exposure to radiation of healthy tissues further away from the sources is therefore reduced. In addition, if the patient moves or if there is any movement of the tumour within the body during treatment, the radiation sources retain their correct position in relation to the tumour. These characteristics of brachytherapy provide advantages over EBRT - the tumour can be treated with very high doses of localised radiation, whilst reducing the probability of unnecessary damage to surrounding healthy tissues.

U.S. National Library of Medicine

  1. Brachytherapy

    A collective term for interstitial, intracavity, and surface radiotherapy. It uses small sealed or partly-sealed sources that may be placed on or near the body surface or within a natural body cavity or implanted directly into the tissues.

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