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ID 109667
タイトル別表記
前立腺IMRTおよびVMATに及ぼす直腸ガスの線量影響
著者
佐々木, 幹治 徳島大学大学院医科学教育部(医学専攻) 徳島大学 教育研究者総覧
Kamomae, Takeshi Nagoya University
Kishi, Taro Tokushima University
笈田, 将皇 University of Okayama
キーワード
Intensity-modulated radiotherapy
Volumetric-modulated arctherapy
Gas
Prostate cancer
Dose distribution
資料タイプ
学位論文
抄録
Purpose: In this study, we compared the dose impact of the heterogeneity caused by rectal gas using two methods of treatment planning for intensity-modulated radiotherapy (IMRT) and volumetric-modulated arc therapy (VMAT).
Materials and Methods: In addition to the structure set used for the standard treatment plan, we created a structure set for evaluation for each patient. The structure sets for evaluation that were created were transferred to the same iso-center as the respective treatment plans for IMRT and VMAT that were to become the standard. The values were then re-calculated.
Results: During the standard prostatic IMRT and VMAT treatment planning, all the subjects met the dose restrictions in place at our hospital. Dose restrictions were fulfilled in the treatment plans for evaluation, excluding those with a clinical target volume (CTV) of V100% and planning target volume (PTV) of D95 when the rectum was excluded. However, in treatment plans for evaluation, IMRT was shown to have a higher concordance rate with standard treatment plans than VMAT.
Conclusion: If rectal gas is present during either IMRT or VMAT, a dose decrease will occur in relation to CTV and PTV, suggesting that a plan does not eliminate adverse effects on organs at risk.
掲載誌名
Japanese Journal of Radiology
ISSN
18671071
1867108X
cat書誌ID
AA12375935
出版者
Springer Japan
33
12
開始ページ
723
終了ページ
733
発行日
2015-11-17
備考
内容要旨・審査要旨・論文本文の公開:
内容要旨・審査要旨 : LID201605311003.pdf
論文本文 : LID201702161001.pdf
著者の申請により要約(2016-05-31公開)に替えて論文本文を公開(2017-02-16)
本論文は, 著者Motoharu Sasakiの学位論文として提出され, 学位審査・授与の対象となっている。
The final publication is available at Springer via https://doi.org/10.1007/s11604-015-0481-7
EDB ID
出版社版DOI
出版社版URL
フルテキストファイル
言語
eng
著者版フラグ
博士論文全文を含む
文科省報告番号
甲第2906号
学位記番号
甲医第1280号
学位授与年月日
2016-03-07
学位名
博士(医学)
学位授与機関
徳島大学
部局
医学系