書誌事項
- タイトル別名
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- A Quality Assurance (QA) System with a Web Camera for High-dose-rate Brachytherapy
- Web camera オ モチイタ コウセンリョウリツ ショウセン ゲン チリョウ ソウチ ノ ヒンシツ ホショウ システム
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Purpose: The quality assurance (QA) system that simultaneously quantifies the position and duration of an 192Ir source (dwell position and time) was developed and the performance of this system was evaluated in high-dose-rate brachytherapy. Methods: This QA system has two functions to verify and quantify dwell position and time by using a web camera. The web camera records 30 images per second in a range from 1,425 mm to 1,505 mm. A user verifies the source position from the web camera at real time. The source position and duration were quantified with the movie using in-house software which was applied with a template-matching technique. Results: This QA system allowed verification of the absolute position in real time and quantification of dwell position and time simultaneously. It was evident from the verification of the system that the mean of step size errors was 0.31±0.1 mm and that of dwell time errors 0.1±0.0 s. Absolute position errors can be determined with an accuracy of 1.0 mm at all dwell points in three step sizes and dwell time errors with an accuracy of 0.1% in more than 10.0 s of the planned time. Conclusion: This system is to provide quick verification and quantification of the dwell position and time with high accuracy at various dwell positions without depending on the step size.
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 72 (3), 227-233, 2016
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
- 1390001206361097856
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- NII論文ID
- 130005137456
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- NII書誌ID
- AN00197784
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- ISSN
- 18814883
- 03694305
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- NDL書誌ID
- 027257845
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- PubMed
- 27000671
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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