Comparison of Dose Calculation Algorithms in Stereotactic Radiation Therapy in Lung
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- Tomiyama Yuki
- Graduate School of Health Science, Kumamoto University
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- Araki Fujio
- Faculty of Life Sciences, Kumamoto University
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- Kanetake Nagisa
- Kumamoto Radiosurgery Clinic
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- Shimohigashi Yoshinobu
- Kumamoto Radiosurgery Clinic
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- Tominaga Hirofumi
- Kumamoto Radiosurgery Clinic
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- Sakata Jyunichi
- Kumamoto Radiosurgery Clinic
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- Oono Takeshi
- Faculty of Life Sciences, Kumamoto University
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- Kouno Tomohiro
- Graduate School of Health Science, Kumamoto University
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- Hioki Kazunari
- Graduate School of Health Science, Kumamoto University
Bibliographic Information
- Other Title
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- 肺の定位放射線治療における計算アルゴリズムの線量計算精度の比較
- 臨床技術 肺の定位放射線治療における計算アルゴリズムの線量計算精度の比較
- リンショウ ギジュツ ハイ ノ テイイ ホウシャセン チリョウ ニ オケル ケイサン アルゴリズム ノ センリョウ ケイサン セイド ノ ヒカク
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Abstract
Dose calculation algorithms in radiation treatment planning systems (RTPSs) play a crucial role in stereotactic body radiation therapy (SBRT) in the lung with heterogeneous media. This study investigated the performance and accuracy of dose calculation for three algorithms: analytical anisotropic algorithm (AAA), pencil beam convolution (PBC) and Acuros XB (AXB) in Eclipse (Varian Medical Systems), by comparison against the Voxel Monte Carlo algorithm (VMC) in iPlan (BrainLab). The dose calculations were performed with clinical lung treatments under identical planning conditions, and the dose distributions and the dose volume histogram (DVH) were compared among algorithms. AAA underestimated the dose in the planning target volume (PTV) compared to VMC and AXB in most clinical plans. In contrast, PBC overestimated the PTV dose. AXB tended to slightly overestimate the PTV dose compared to VMC but the discrepancy was within 3%. The discrepancy in the PTV dose between VMC and AXB appears to be due to differences in physical material assignments, material voxelization methods, and an energy cut-off for electron interactions. The dose distributions in lung treatments varied significantly according to the calculation accuracy of the algorithms. VMC and AXB are better algorithms than AAA for SBRT.
Journal
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- Japanese Journal of Radiological Technology
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Japanese Journal of Radiological Technology 69 (6), 663-668, 2013
Japanese Society of Radiological Technology
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Keywords
Details 詳細情報について
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- CRID
- 1390001206363723776
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- NII Article ID
- 10031174162
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- NII Book ID
- AN00197784
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- COI
- 1:STN:280:DC%2BC3sjktV2ktA%3D%3D
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- ISSN
- 18814883
- 03694305
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- NDL BIB ID
- 024738452
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- PubMed
- 23782779
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed