POLARITY AND ION RECOMBINATION CORRECTION FACTORS OF A THIMBLE TYPE IONIZATION CHAMBER WITH DEPTH IN WATER IN THE MEGAVOLTAGE BEAMS |
Kim, Seong-Hoon
(Department of Radiation Oncology, Hanyang University Hospital)
Huh, Hyun-Do (Department of Radiation Oncology, Inhwa University Hospital) Choi, Sang-Hyun (Department of Radiation Oncology, Inhwa University Hospital) Min, Chul-Hee (Department of Nuclear Engineering, Hanyang University) Shin, Dong-Oh (Department of Radiation Oncology, KyungHee University Hospital) Choi, Jin-Ho (Gachon University of Medicine and Science) |
1 | Aget H and Rosenwald J. Polarity effect for various chambers with multiple irradiation conditions in electron beams. Med. Phys. 1991;18:67-75 DOI ScienceOn |
2 | AAPM's TG-51 Protocol. Protocol for Clinical Reference Dosimetry of High-Energy Photon and Electron Beams. 1999 |
3 | IAEA, Technical Reports Series No.398. Absorbed Dose Determination in External Beam Radiotherapy. 2000 |
4 | Gerbi BJ and Khan FM. The polarity effect for commercially available plane parallel ionization chambers. Med. Phys. 1987;14:210-15 DOI ScienceOn |
5 | Nisbet A and Thwaites DI. Polarity and ion recombination correction factors for ionization chambers employed in electron beam dosimetry. Med. Phy. 1988;15:776-777 DOI ScienceOn |
6 | Attix FH. Cavity theory. In: Introduction to radiological physics and radiation dosimetry, 1986:231-259 |
7 | Boag JW and Currant J. Current collection and ion recombination in small cylindrical ionization chambers exposed to pulsed radiation. Br. J. Radiol. 1980;53:471-8 DOI ScienceOn |
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