Radiation Oncology Journal
- Volume 7 Issue 2
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- Pages.279-285
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- 1989
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- 2234-1900(pISSN)
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- 2234-3156(eISSN)
Variation in Depth Dose Data between Open and Wedge Fields for 6 MV X-Rays
6MV X선에 있어서 쇄기형 조사야와 개방 조사야 사이의 깊이 선량률의 차이
- U, Hong (Department of Therapeutic Raidology, Kyungpook National University Hospital) ;
- Ryu, Sam-Uel (Department of Therapeutic Raidology, Kyungpook National University Hospital) ;
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Park, In-Kyu
(Department of Therapeutic Raidology, Kyungpook National University Hospital)
- Published : 1989.12.01
Abstract
Central axis depth dose data for 6 MV X-rays, including tissue maximum ratios, were measured for wedge fields according to Tatcher's equation. In wedge fields, the differences in magnitude which increased with depth, field size, and wedge thickness increased when compared with the corresponding open field data. However, phantom scatter correction factors for wedge fields differed less than
Tatcher식에 의하여 조직최대선량비와 깊이선량을 6MV X-선의 중심축상에서 측정하였다. 쐐기형 조사야에 있어서 깊이, 조사야 및 쐐기의 두께 등이 증가할수록 깊이선량은 개방 조사야에 비하여 크기가 증가하였다. 그러나 쐐기형 조사야에 있어서 조직산란보정 계수는 개방 조사야에 비하여 그 차이가