Evaluation of a Post-analysis Method for Cumulative Dose Distribution in Stereotactic Body Radiotherapy
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- Imae Toshikazu
- Department of Radiology, University of Tokyo Hospital
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- Saotome Naoya
- Research Center for Charged Particle Therapy, National Institute of Radiological Sciences
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- Takenaka Shigeharu
- Department of Radiology, University of Tokyo Hospital
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- Watanabe Yuuichi
- Department of Radiology, University of Tokyo Hospital
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- Takeuchi Yukihiro
- Department of Radiology, University of Tokyo Hospital
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- Yano Keiichi
- Department of Radiology, University of Tokyo Hospital
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- Nakano Masahiro
- Department of Radiology, University of Tokyo Hospital
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- Haga Akihiro
- Department of Radiology, University of Tokyo Hospital
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- Takahashi Wataru
- Department of Radiology, University of Tokyo Hospital
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- Yamashita Hideomi
- Department of Radiology, University of Tokyo Hospital
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- Nakagawa Keiichi
- Department of Radiology, University of Tokyo Hospital
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- Ohtomo Kuni
- Department of Radiology, University of Tokyo Hospital
Bibliographic Information
- Other Title
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- 肺定位放射線治療における積算線量分布の事後評価法の検討
- ハイ テイイ ホウシャセン チリョウ ニ オケル セキサンセンリョウ ブンプ ノ ジゴ ヒョウカホウ ノ ケントウ
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Abstract
Purpose: The purpose of this study was to evaluate a post-analysis method for cumulative dose distribution in stereotactic body radiotherapy (SBRT) using volumetric modulated arc therapy (VMAT) . Method: VMAT is capable of acquiring respiratory signals derived from projection images and machine parameters based on machine logs during VMAT delivery. Dose distributions were reconstructed from the respiratory signals and machine parameters in the condition where respiratory signals were without division, divided into 4 and 10 phases. The dose distribution of each respiratory phase was calculated on the planned four-dimensional CT (4DCT). Summation of the dose distributions was carried out using deformable image registration (DIR), and cumulative dose distributions were compared with those of the corresponding plans. Results and discussion: Without division, dose differences between cumulative distribution and plan were not significant. In the condition where respiratory signals were divided, dose differences were observed over dose in cranial region and under dose in caudal region of planning target volume (PTV). Differences between 4 and 10 phases were not significant. Conclusion: The present method was feasible for evaluating cumulative dose distribution in VMAT-SBRT using 4DCT and DIR.
Journal
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- Japanese Journal of Radiological Technology
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Japanese Journal of Radiological Technology 72 (3), 251-260, 2016
Japanese Society of Radiological Technology
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Keywords
Details 詳細情報について
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- CRID
- 1390001206361099776
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- NII Article ID
- 130005137459
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- NII Book ID
- AN00197784
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- ISSN
- 18814883
- 03694305
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- NDL BIB ID
- 027257884
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- PubMed
- 27000674
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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