@article{oai:repo.qst.go.jp:00046270,
 author = {Furukawa, Takuji and Inaniwa, Taku and Satou, Shinji and Shirai, Toshiyuki and Mori, Shinichiro and Takeshita, Eri and Mizushima, Kota and Himukai, Takeshi and Noda, Kouji and 古川 卓司 and 稲庭 拓 and 佐藤 眞二 and 白井 敏之 and 森 慎一郎 and 竹下 英里 and 水島 康太 and 日向 猛 and 野田 耕司},
 issue = {9},
 journal = {Medical Physics},
 month = {Aug},
 note = {Purpose: In moving target irradiation with pencil beam scanning, the interplay effect between the target motion and the scanned beam is a problem because this effect causes over or under dosage in the target volume. To overcome this, we have studied rescanning using a gating technique.
Methods: A simulation and experimental study was carried out. In the experiment, we used the fast scanning system developed at the HIMAC to verify the validity of phase controlled rescanning method, in which the time for rescanning irradiation of each slice is matched to the gating duration.
Results: Simulation and experimental results showed that controlling the scan speed to match the respiration cycle with rescans can deliver the blurred dose distribution. In the comparison between the static measurements and the moving measurements with the phase controlled rescanning method, the dose difference was less than 2% for pinpoint chambers in the target volume.
Conclusions: The simulation and experimental results demonstrated that the phase controlled rescanning method makes it possible to deliver the dose distribution close to the expected one. As an experimental result for 3D irradiation, it was estimated that blurring by the probability density function was not only for a lateral distribution, but also for a distal distribution, even in the lateral rescanning},
 pages = {4874--4879},
 title = {Moving target irradiation with fast rescanning and gating in particle therapy},
 volume = {37},
 year = {2010}
}