Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Rintaro Fujimoto"'
Autor:
Yoshikazu Maeda, Keiji Kobashi, Yoshitaka Sato, Hiroyasu Tamamura, Kazutaka Yamamoto, Keiichiro Matsushita, Makoto Sasaki, Hitoshi Tatebe, Tomoko Asahi, Sae Matsumoto, Shigeyuki Takamatsu, Koichi Miyazaki, Rintaro Fujimoto, Yusuke Uchinami, Norio Katoh, Hidefumi Aoyama
Publikováno v:
Medical Physics.
Autor:
Rintaro Fujimoto, Tomohiro Yamazaki, Toshiki Kobayashi, Shigehito Miki, Fumihiro China, Hirotaka Terai, Rikizo Ikuta, Takashi Yamamoto
Publikováno v:
Optics express. 30(20)
We demonstrate a distribution of frequency-multiplexed polarization-entangled photon pairs over 16 frequency channels using demultiplexers for the signal and idler photons with a frequency spacing of 25 GHz, which is compatible with dense wavelength
Autor:
Hirotaka Terai, Shoichi Murakami, Shigehito Miki, Shigeyuki Miyajima, Nobuyuki Imoto, Fumihiro China, Takashi Yamamoto, Masahiro Yabuno, Rintaro Fujimoto, Toshiki Kobayashi, Rikizo Ikuta
Publikováno v:
Applied Physics Express. 14:102001
Publikováno v:
Journal of Applied Clinical Medical Physics
Purpose The purpose of this study is to improve dose calculation accuracy of the simplified Monte Carlo (SMC) algorithm in the low‐dose region. Because conventional SMC algorithms calculate particle scattering in consideration of multiple Coulomb s
Autor:
Shinichiro Fujitaka, Shusuke Hirayama, Yoshihiko Nagamine, Keisuke Yasui, Taisuke Takayanagi, Masahiro Hosaka, Rintaro Fujimoto, Toshiyuki Toshito, Masumi Umezawa, Chihiro Omachi, Yusuke Fujii
Publikováno v:
Medical Physics. 43:1437-1450
Purpose: The main purpose in this study was to present the results of beam modeling and how the authors systematically investigated the influence of double and triple Gaussian proton kernel models on the accuracy of dose calculations for spot scannin
Autor:
Xiaodong Zhang, Michael Gillin, Qing Hou, Xiaorong Ronald Zhu, Rintaro Fujimoto, Xianliang Wang, Pei Wang, Jinyi Lang, Brandon Gunn, Falk Poenisch, Yupeng Li, Hiroshi Akiyama, Steven J. Frank, Koichi Miyazaki, Heng Li, David R. Grosshans, Narayan Sahoo
Publikováno v:
Cancers, Vol 9, Iss 12, p 170 (2017)
Cancers
Cancers; Volume 9; Issue 12; Pages: 170
Cancers
Cancers; Volume 9; Issue 12; Pages: 170
A mini-ridge filter is often used to widen the Bragg peak in the longitudinal direction at low energies but not high energies. To facilitate the clinical use of a mini-ridge filter, we performed a planning study for the feasibility of a mini-ridge fi
Autor:
Takaaki Fujii, Hiroki Shirato, Seishin Takao, Naoki Miyamoto, Shusuke Hirayama, Kikuo Umegaki, Taeko Matsuura, Yusuke Fujii, Shinichi Shimizu, Rintaro Fujimoto, Hideaki Ueda
Publikováno v:
Medical physics. 45(7)
Purpose To evaluate the biological effects of proton beams as part of daily clinical routine, fast and accurate calculation of dose-averaged linear energy transfer (LETd ) is required. In this study, we have developed the analytical LETd calculation
Autor:
Chie Toramatsu, Kenichiro Maeda, Kenneth Sutherland, Hideaki Nihongi, Seishin Takao, Yoshihiko Nagamine, Taeko Matsuura, N Miyamoto, Rintaro Fujimoto, Hiroki Shirato, Kikuo Umegaki, Taisuke Takayanagi, Shinichi Shimizu
Publikováno v:
Medical physics. 39(6Part21)
Purpose: In spot scanning proton therapy, accurate patient positioning before and during treatment is essential. A small gold ball marker is suitable as a fiducial for prostate treatment. However, it has been pointed out that the marker causes dose s
Autor:
Kikuo Umegaki, Kenichiro Maeda, Chie Toramatsu, Taisuke Takayanagi, Taeko Matsuura, Kenneth Sutherland, Naoki Miyamoto, Ryusuke Suzuki, Hiroki Shirato, Masayori Ishikawa, Rintaro Fujimoto, Shinichi Shimizu, Yoshihiko Nagamine, Hideaki Nihongi, Seishin Takao
Publikováno v:
Medical Physics. 39:5584-5591
Purpose: In accurate proton spot-scanning therapy, continuous target tracking by fluoroscopic x ray during irradiation is beneficial not only for respiratory moving tumors of lung and liver but also for relatively stationary tumors of prostate. Impla
Publikováno v:
Nuclear Physics A. 722:C538-C542
New aspects of quenching effects in Gamow-Teller (GT) transitions and magnetic moments are investigated for p-shell nuclei using an improved shell-model Hamiltonian with enhanced spin-flip neutron-proton interaction and modified single-particle energ