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タイトル: | Feasibility evaluation of a new irradiation technique: three-dimensional unicursal irradiation with the Vero4DRT (MHI-TM2000). |
著者: | Mizowaki, Takashi https://orcid.org/0000-0002-8135-8746 (unconfirmed) Takayama, Kenji Nagano, Kazuo Miyabe, Yuki Matsuo, Yukinori https://orcid.org/0000-0002-4372-8259 (unconfirmed) Kaneko, Shuji Kokubo, Masaki Hiraoka, Masahiro |
著者名の別形: | 溝脇, 尚志 |
キーワード: | three-dimensional unicursal irradiation dynamic conformal arc irradiation image-guided radiotherapy new irradiation technique dynamic wave arc irradiation |
発行日: | 1-Mar-2013 |
出版者: | Oxford University Press |
誌名: | Journal of radiation research |
巻: | 54 |
号: | 2 |
開始ページ: | 330 |
終了ページ: | 336 |
抄録: | The Vero4DRT (MHI-TM2000) is a newly designed unique image-guided radiotherapy system consisting of an O-ring gantry. This system can realize a new irradiation technique in which both the gantry head and O-ring continuously and simultaneously rotate around the inner circumference of the O-ring and the vertical axis of the O-ring, respectively, during irradiation. This technique creates three-dimensional (3D) rotational dynamic conformal arc irradiation, which we term '3D unicursal irradiation'. The aim of this study was to present the concept and to estimate feasibility and potential advantages of the new irradiation technique. Collision maps were developed for the technique and a 3D unicursal plan was experimentally created in reference to the collision map for a pancreatic cancer case. Thereafter, dosimetric comparisons among the 3D unicursal, a two-dimensionally rotational dynamic conformal arc irradiation (2D-DCART), and an intensity-modulated radiation therapy (IMRT) plan were conducted. Dose volume data of the 3D unicursal plan were comparable or improved compared to those of the 2D-DCART and IMRT plans with respect to both the target and the organs at risk. The expected monitor unit (MU) number for the 3D unicursal plan was only 7% higher and 22.1% lower than the MUs for the 2D-DCART plan and IMRT plan, respectively. It is expected that the 3D unicursal irradiation technique has potential advantages in both treatment time and dose distribution, which should be validated under various conditions with a future version of the Vero4DRT fully implemented the function. |
著作権等: | © The Author 2012. Published by Oxford University Press on behalf of The Japan Radiation Research Society and Japanese Society for Therapeutic Radiology and Oncology. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited |
URI: | http://hdl.handle.net/2433/173186 |
DOI(出版社版): | 10.1093/jrr/rrs076 |
PubMed ID: | 22923744 |
出現コレクション: | 学術雑誌掲載論文等 |
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