Electron therapy or electron beam therapy (EBT) is a kind of external beam radiotherapy where electrons are directed to a tumor site for medical treatment of cancer.
Electron beam therapy is performed using a medical linear accelerator. The same device can also be used to produce high energy photon beams. When electrons are required, the x-ray target is retracted out of the beam and the electron beam is collimated with a piece of apparatus known as an applicator or an additional collimating insert, constructed from a low melting point alloy.
Propertiesedit
Note the rapid falloff for 4 MeV electron compared to X rays and Protons.
Electron beams have a finite range, after which dose falls off rapidly. Therefore, they spare deeper healthy tissue. The depth of the treatment is selected by the appropriate energy. Unlike photon beams there is no surface sparing effect, so electron therapy is used when the target extends to the patient's skin.
Indicationsedit
Electron beam therapy is used in the treatment of superficial tumors like cancer of skin regions, or total skin (e.g. mycosis fungoides), diseases of the limbs (e.g. melanoma and lymphoma), nodal irradiation, and it may also be used to boost the radiation dose to the surgical bed after mastectomy or lumpectomy. For deeper regions intraoperative electron radiation therapy might be applied.
Eric E. Klein: "Electron-Beam Therapy: Dosimetry, Planning, and Techniques" in: Edward C. Halperin, Carlos A. Perez, Luther W. Brady (ed.): Perez and Brady's Principles and Practice of Radiation Oncology, 5th. edition, 2008
December 02, 2023
electron, therapy, electron, beam, therapy, kind, external, beam, radiotherapy, where, electrons, directed, tumor, site, medical, treatment, cancer, edit, wikidata, contents, equipment, properties, indications, also, referencesequipment, editelectron, beam, th. Electron therapy or electron beam therapy EBT is a kind of external beam radiotherapy where electrons are directed to a tumor site for medical treatment of cancer Electron therapyICD 992 25 edit on Wikidata Contents 1 Equipment 2 Properties 3 Indications 4 See also 5 ReferencesEquipment editElectron beam therapy is performed using a medical linear accelerator The same device can also be used to produce high energy photon beams When electrons are required the x ray target is retracted out of the beam and the electron beam is collimated with a piece of apparatus known as an applicator or an additional collimating insert constructed from a low melting point alloy Properties edit nbsp Note the rapid falloff for 4 MeV electron compared to X rays and Protons Electron beams have a finite range after which dose falls off rapidly Therefore they spare deeper healthy tissue The depth of the treatment is selected by the appropriate energy Unlike photon beams there is no surface sparing effect so electron therapy is used when the target extends to the patient s skin Indications editElectron beam therapy is used in the treatment of superficial tumors like cancer of skin regions or total skin e g mycosis fungoides diseases of the limbs e g melanoma and lymphoma nodal irradiation and it may also be used to boost the radiation dose to the surgical bed after mastectomy or lumpectomy For deeper regions intraoperative electron radiation therapy might be applied See also editIntraoperative electron radiation therapy IOERT External beam radiotherapy EBRT Proton therapyReferences editEric E Klein Electron Beam Therapy Dosimetry Planning and Techniques in Edward C Halperin Carlos A Perez Luther W Brady ed Perez and Brady s Principles and Practice of Radiation Oncology 5th edition 2008 Retrieved from https en wikipedia org w index php title Electron therapy amp oldid 1180908731, wikipedia, wiki, book, books, library,
