6 MV 광자선조사면내 투과성필터에 의한 조직선량
- Affiliated Author(s)
- 김옥배; 최태진
- Alternative Author(s)
- Kim, Ok Bae; Choi, Tae Jin
- Journal Title
- 의학물리
- ISSN
- 1226-5829
- Issued Date
- 1993
- Keyword
- Partial Attenuation Filter; TMR; SMR
- Abstract
- Measured and calculated the TMR and SMR factors from percent depth dose underpartial attenuators which cover the whole part of the radiation beam with variousfilter thickness from 0 to 50 mm. This study was performed for x-ray beams generated with a 6 MV linear acceleratorat source to surface distance of 100cm in a water phantom for Lipowitz metal. TMR(0,d,t) was derived from non-linear polynomial regression with field sizedifferencies and a given filter thickness. In this experiments, the TMR(0,10,50) of 50mm of filter thickness was showed13.6 % higher than that of open field and SMR(5,10,50) was 38.5% smaller than thatof open field in same depth.
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