Two Approximations to Obtain the Collimator Scatter Factor (Sc) for MLC Irregular Fields
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- Nara Tetsuzo
- Department of Radiology, Aomori Prefectural Hospital
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- Iwasaki Akira
- Department of Radiological Technology, School of Health Sciences, Hirosaki University
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- Komai Fumio
- Department of Radiology, Aomori Prefectural Hospital
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- Sato Kazuhiko
- Department of Radiology, Aomori Prefectural Hospital
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- Fukushi Hideto
- Department of Radiology, Aomori Prefectural Hospital
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- Horanai Yoshiaki
- Department of Radiology, Aomori Prefectural Hospital
Bibliographic Information
- Other Title
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- ＭＬＣ不整形照射野におけるコリメータ散乱係数（Ｓｃ）を算出する二つの近似法
- MLC フセイケイ ショウシャノ ニ オケル コリメータ サンラン ケイスウ Sc オ サンシュツ スル フタツ ノ キンジホウ
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Abstract
The collimator scatter factor (ScMLC) at MLC irregular fields for high-energy X-ray irradiation is generally assumed to be equal to the jaw collimator scatter factor (Scjaw) of the square field equivalent to the rectangular field produced using pairs of jaw collimators. However, this assumption becomes strained as the ratio of the MLC equivalent square field side to the jaw collimator equivalent square field side decreases. In this study, for 4 MV and 10 MV X-rays, the collimator scatter factor (ScMLC) for an MLC irregular field could be evaluated with a high degree of accuracy using the MLC irregular correction (FMIC) factor or the jaw collimator correction (FJCC) factor.
Journal
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- Japanese Journal of Radiological Technology
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Japanese Journal of Radiological Technology 62 (7), 961-970, 2006
Japanese Society of Radiological Technology
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Details 詳細情報について
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- CRID
- 1390001206363579904
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- NII Article ID
- 110004776021
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- NII Book ID
- AN00197784
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- COI
- 1:STN:280:DC%2BD28vltVGlug%3D%3D
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- ISSN
- 18814883
- 03694305
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- NDL BIB ID
- 8044582
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- PubMed
- 16874285
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed