書誌事項
- タイトル別名
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- Mechanical Accuracy of a Stereotactic Irradiation System Using a Micro Multi-leaf Collimator
- マイクロマルチリーフコリメータ オ モチイタ テイイ ホウシャセン ショウシャ システム ノ キカイテキ セイド ヒョウカ
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説明
Mechanical accuracy of a stereotactic irradiation system using a micro multi-leaf collimator (mMLC), Elekta DMLC, has been evaluated. Measurements were made to obtain transmission, leakage, penumbra, and positioning accuracy of the DMLC leaf for a 6 MV photon beam. Mechanical accuracy and long term stability of a linac isocenter was also evaluated. The resulting transmission, along a line perpendicular to the leaf movement, was 0.31±0.01%, and the leakage from the closed opposing leaf pairs was 0.39±0.01%. The measured penumbra, at a depth incurring maximum dose, was 2.37±0.16 mm toward the leaf end and 2.14±0.18 mm toward the leaf side for various field sizes. The leaf gap width error, of 0.10±0.08 mm, was obtained by analyzing picket fence test results. The maximum leaf positioning error, of 0.14±0.06 mm, was obtained by analyzing the log file for a various gantry angles during an arc delivery. The isocenter accuracy was within a radius of 1 mm, without any recalibration for two years. In conclusion, our stereotactic irradiation system using DMLC was capable of providing accurate stereotactic treatment.
収録刊行物
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- 日本放射線技術学会雑誌
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日本放射線技術学会雑誌 67 (10), 1267-1274, 2011
公益社団法人 日本放射線技術学会
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詳細情報 詳細情報について
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- CRID
- 1390001206362153600
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- NII論文ID
- 10030042119
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- NII書誌ID
- AN00197784
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- COI
- 1:STN:280:DC%2BC3MbktVejtA%3D%3D
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- ISSN
- 18814883
- 03694305
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- NDL書誌ID
- 023245794
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- PubMed
- 22026979
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可