고선량율 원격강내조사의 코발트-60 이동선원에 의한 선량특성
- Affiliated Author(s)
- 김옥배; 최태진
- Alternative Author(s)
- Kim, Ok Bae; Choi, Tae Jin
- Journal Title
- 의학물리
- ISSN
- 1226-5829
- Issued Date
- 1990
- Keyword
- Source oscillation; Film dosimetry
- Abstract
- Dose distributions around Co- 60 moving source in high dose rate remote afterloading unit, Buchler 3K unit, were experimented with X-omat V films and calculations. In our experiments, film dosimetries have achieved to evaluated the axial dose distributions for source oscillations were 0, 3.5, 5.0 and 6.0 cm in periodically, In results, the dose distributions in axial of source movement showed apparently higher than in transverse direction caused by source locations, dwelling time and air gap in the applicator. In the calculations, the dose rate was derived by using the inverse square law, filteration corrections and Meisberger constant for scatter corrections as source movings. In our experiments and calculations, the average dose uncertainties were showed -2.1 ± ± 1.9% in fixed sourdce, -2.9 ± ± 1.8%, -7.4 ± ± 6.1% and -6.7 ± ± 4.6% at 3.5 cm, 5.0 cm and 6.0 cm source oscillations, but the calculations have showed very close to experimental dose rate within 4 cm distance from source.
- 공개 및 라이선스
-
- 파일 목록
-
Items in Repository are protected by copyright, with all rights reserved, unless otherwise indicated.