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- W2004452055 abstract "Accurate knowledge of the distribution and amount of contamination electrons arising from the gantry head at the surface and in the first few centimeters of tissue is essential for the clinical practice of radiation oncology. These electrons tend to increase the surface dose and deteriorate the buildup in the radiation field compared with a pure photon field. In this study, the relative quantity and reduction of contamination electrons in a therapeutic radiation photon beam (15 MV) was investigated. The contamination electrons can be separated out by a special device. This device, consisting of a double-focus electric field (8 x 10(5) V/m) made by a large number of strings 2 x 10(-4) m in diameter, removes contamination electrons and positrons without affecting the photon beam. It is located under the tray holder. In clinical practice, the device can decrease the relative surface charge and relative surface dose due to contamination electrons in the photon beam used in radiation therapy." @default.
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- W2004452055 date "1999-01-01" @default.
- W2004452055 modified "2023-09-25" @default.
- W2004452055 title "Improvement of X-ray beam quality for treating cancer using double focus electric field strings" @default.
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- W2004452055 doi "https://doi.org/10.1002/(sici)1520-6823(1999)7:6<382::aid-roi9>3.0.co;2-x" @default.
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