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| electron therapy ： ウィキペディア英語版 |
electron therapy
Electron therapy or Electron Beam Therapy (EBT) is a kind of external beam radiotherapy where electrons are directed to a tumor site.
==Equipment==
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.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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