Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Ken Yusa"'
Autor:
Yoshiki Kubota, Hidemasa Kawamura, Makoto Sakai, Ryou Tsumuraya, Mutsumi Tashiro, Ken Yusa, Nobuteru Kubo, Hiro Sato, Masahiro Kawahara, Hiroyuki Katoh, Tatsuaki Kanai, Tatsuya Ohno, Takashi Nakano
Publikováno v:
PLoS ONE, Vol 11, Iss 4, p e0153894 (2016)
BACKGROUND AND PURPOSE:Carbon-ion radiotherapy of prostate cancer is challenging in patients with metal implants in one or both hips. Problems can be circumvented by using fields at oblique angles. To evaluate the influence of setup and range uncerta
Externí odkaz:
https://doaj.org/article/8a31f4b6a77b4070b003b72846e5b655
Autor:
Tatsuya Ohno, Kota Torikai, Yukari Yoshida, Takayoshi Ishii, Hiroyuki Katoh, Takashi Nakano, Yoko Kitada, Mutsumi Tashiro, Hirofumi Shimada, Ken Yusa, Satoru Yamada, Tatsuaki Kanai
Publikováno v:
Cancers, Vol 3, Iss 4, Pp 4046-4060 (2011)
Carbon ion radiotherapy (C-ion RT) offers superior dose conformity in the treatment of deep-seated tumors compared with conventional X-ray therapy. In addition, carbon ion beams have a higher relative biological effectiveness compared with protons or
Externí odkaz:
https://doaj.org/article/53d0b2b92f194f529c5f47cdf9a57ab9
Autor:
MUTSUMI TASHIRO, YUKARI YOSHIDA, TAKAHIRO OIKE, MASAO NAKAO, KEN YUSA, YUKA HIROTA, TATSUYA OHNO
Publikováno v:
Anticancer Research. 42:2469-2477
This study aimed to establish a setup for ultra-high-dose-rate (FLASH) carbon-ion irradiation, and to conduct the first human cell experiments using FLASH carbon ions.A system for FLASH carbon-ion irradiation (1-3 Gy at 13 or 50 keV/μm) was develope
Autor:
Tadashi Kamada, Manabu Mizota, Nobuyuki Kanematsu, Tatsuaki Kanai, Shinichi Minohara, Hideyuki Mizuno, Toshihiro Yanou, Shunsuke Yonai, Akifumi Fukumura, Ken Yusa, Masaki Suga, Toshiyuki Shirai
Publikováno v:
Journal of Applied Clinical Medical Physics
Purpose The QA team of the Japan carbon‐ion radiation oncology study group (J‐CROS) was organized in 2015 to enhance confidence in the accuracy of clinical dosimetry and ensure that the facility QA procedures are adequate. The team conducted onsi
Publikováno v:
Medical Physics. 42:5188-5194
Purpose: A conventional broad beam method is applied to carbon ion radiotherapy at Gunma University Heavy Ion Medical Center. According to this method, accelerated carbon ions are scattered by various beam line devices to form 3D dose distribution. T
Autor:
Tatsuaki Kanai, Masahiro Kawahara, Ken Yusa, Hiroyuki Katoh, Ryou Tsumuraya, Nobuteru Kubo, Takashi Nakano, Hidemasa Kawamura, Tatsuya Ohno, Yoshiki Kubota, Makoto Sakai, Mutsumi Tashiro, Hiro Sato
Publikováno v:
PLoS ONE, Vol 11, Iss 4, p e0153894 (2016)
PLoS ONE
PLoS ONE
Background and Purpose Carbon-ion radiotherapy of prostate cancer is challenging in patients with metal implants in one or both hips. Problems can be circumvented by using fields at oblique angles. To evaluate the influence of setup and range uncerta
Autor:
Hideyuki Sakurai, Tatsuaki Kanai, Shinichi Minohara, Ken Yusa, Mutsumi Tashiro, Takashi Nakano
Publikováno v:
Medical Physics. 33:1747-1757
We present a new quantification technique for three-dimensional (3D) lung motion by means of tracking the anatomical features inside the lung using a set of sequential 3D-CT images (a 4D-CT image). The method is based on the conservation of topology,
Autor:
Masanobu Ozaki, M. Natsume, H. Shibuya, Tatsumi Koi, Taku Nakamura, Koichi Kodama, Takashi Sasaki, S. Kameoka, Masataka Komori, S. Ogawa, Nobuyuki Kanematsu, Satoru Takahashi, K. Murakami, Naotaka Naganawa, Shinji Sato, M. Shibasaki, T. Fukuda, Mitsutaka Kanazawa, Ken Yusa, C. Fukushima, K. Amako, T. Toshito, Shigeki Aoki, Kimio Niwa, Makoto Asai, T. Ban
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 556:482-489
We performed an experimental study of charge identification of heavy ions from helium to carbon having energy of about 290 MeV/u using an emulsion chamber. Emulsion was desensitized by means of forced fading (refreshing) to expand a dynamic range of
Autor:
Hiroyoshi Oka, Ken Yusa, Hiroshi Asakura, Yasuyuki Futami, Tatsuaki Kanai, Masahiro Endo, Nobuyuki Kanematsu
Publikováno v:
Medical Physics. 29:2823-2829
We have upgraded a heavy-ion radiotherapy treatment-planning system to adapt for the layer-stacking irradiation method, which is to conform a variable spread-out Bragg peak to a target volume by means of dynamic control of the conventional beam-modif
Autor:
Takeshi Ebara, Satoshi Abe, Ken Yusa, Satoru Yamada, Ryosuke Okada, Mutsumi Tashiro, Tatsuya Ohno, Takashi Nakano, Hidemasa Kawamura, Tatsuaki Kanai, Takayoshi Ishii, Yoshiaki Ohashi, Keisuke Arai, Hirofumi Shimada, Yuji Kurosawa, Jun-ichi Koya
Publikováno v:
Radiological Physics and Technology
We propose a strategy of individualized image acquisitions and treatment planning for respiratory-gated carbon-ion therapy. We implemented it in clinical treatments for diseases of mobile organs such as lung cancers at the Gunma University Heavy Ion