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Evaluation of monitor unit calculation based on measurement and calculation with a simplified Monte Carlo method for passive beam delivery system in proton beam therapy
http://hdl.handle.net/2241/00136065
http://hdl.handle.net/2241/00136065b0a76a55-307d-44d9-8e08-10706576b85c
名前 / ファイル | ライセンス | アクション |
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JACMP_16-5 (900.6 kB)
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Item type | Journal Article(1) | |||||
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公開日 | 2016-02-26 | |||||
タイトル | ||||||
タイトル | Evaluation of monitor unit calculation based on measurement and calculation with a simplified Monte Carlo method for passive beam delivery system in proton beam therapy | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Hotta, Kenji
× Hotta, Kenji× Kohno, Ryosuke× Nagafuchi, Kohsuke× Yamaguchi, Hidenori× Tansho, Ryohei× Takada, Yoshihisa× Akimoto, Tetsuo |
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著者別名 |
高田, 義久
× 高田, 義久 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Calibrating the dose per monitor unit (DMU) for individual patients is important to deliver the prescribed dose in radiation therapy. We have developed a DMU calculation method combining measurement data and calculation with a simplified Monte Carlo method for the double scattering system in proton beam therapy at the National Cancer Center Hospital East in Japan. The DMU calculation method determines the clinical DMU by the multiplication of three factors: a beam spreading device factor FBSD, a patient-specific device factor FPSD, and a field-size correction factor FFS(A). We compared the calculated and the measured DMU for 75 dose fields in clinical cases. The calculated DMUs were in agreement with measurements in ± 1.5% for all of 25 fields in prostate cancer cases, and in ± 3% for 94% of 50 fields in head and neck (H&N) and lung cancer cases, including irregular shape fields and small fields. Although the FBSD in the DMU calculations is dominant as expected, we found that the patient-specific device factor and field-size correction also contribute significantly to the calculated DMU. This DMU calculation method will be able to substitute the conventional DMU measurement for the majority of clinical cases with a reasonable calculation time required for clinical use. | |||||
書誌情報 |
Journal of applied clinical medical physics 巻 16, 号 5, p. 228-238, 発行日 2015-09 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1526-9914 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12034060 | |||||
PubMed番号 | ||||||
識別子タイプ | PMID | |||||
関連識別子 | 26699303 | |||||
著者版フラグ | ||||||
値 | publisher | |||||
出版者 | ||||||
出版者 | American Association of Physicists in Medicine |