Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Ryuichi Yada"'
Publikováno v:
Annals of 3D Printed Medicine, Vol 14, Iss , Pp 100147- (2024)
We aimed to introduce a novel semi-automatic design approach for fabricating individualized, three-dimensional printed template dedicated to interstitial brachytherapy in vaginal tumor treatment. The central component of this concept involved the dev
Externí odkaz:
https://doaj.org/article/ab03304cde9a43c98b5aa8d952390535
Autor:
Tianyuan Wang, Keitaro Sofue, Ryuji Shimada, Takeaki Ishihara, Ryuichi Yada, Masanori Miyamoto, Ryohei Sasaki, Takamichi Murakami
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-13 (2023)
Abstract To develop and investigate the feasibility of sub-second temporal resolution volumetric T1-weighted four-dimensional (4D-) MRI in comparison with 4D-CT for respiratory-correlated motion assessment using an MRI/CT-compatible phantom. Sub-seco
Externí odkaz:
https://doaj.org/article/a73c35b25e904926a81f30c089901444
Autor:
Tomonori Yabuuchi, Kazufusa Mizonobe, Hiroki Kawaguchi, Hiroaki Akasaka, Hikaru Kubota, Ryohei Sasaki, Ai Nakaoka, Yuya Oki, Daisuke Miyawaki, Aya Harada, Shuichiro Miyazaki, Hiroshi Mayahara, Masao Nakayama, Takeaki Ishihara, Naritoshi Mukumoto, Satoshi Seno, Kazuyuki Uehara, Keiji Kitatani, Ryuichi Yada
Publikováno v:
Journal of Radiotherapy in Practice. 21:309-314
Aim:CyberKnife is the most advanced form of stereotactic body radiotherapy (SBRT) system that uses a robotic arm to deliver highly focused beams of radiation; however, a limitation is that it only irradiates from ceiling to floor direction. In patien
Autor:
Hidenobu Tachibana, Yusuke Watanabe, Shogo Kurokawa, Takuya Maeyama, Tomoyuki Hiroki, Hideaki Ikoma, Hideaki Hirashima, Hironori Kojima, Takehiro Shiinoki, Yuuki Tanimoto, Hidetoshi Shimizu, Hiroki Shishido, Yoshitaka Oka, Taka-aki Hirose, Masashi Kinjo, Takuya Morozumi, Masahiko Kurooka, Hidekazu Suzuki, Tomohiko Saito, Keiichi Fujita, Ryosuke Shirata, Ryuji Inada, Ryuichi Yada, Mikiko Yamashita, Kazuto Kondo, Takashi Hanada, Tadashi Takenaka, Keisuke Usui, Hiroyuki Okamoto, Hiroshi Asakura, Ryoichi Notake, Toru Kojima, Yu Kumazaki, Shogo Hatanaka, Riki Kikumura, Masaru Nakajima, Ryosei Nakada, Ryusuke Suzuki, Hideyuki Mizuno, Shinji Kawamura, Mistuhiro Nakamura, Tetsuo Akimoto
Publikováno v:
Brachytherapy.
To quantify dose delivery errors for high-dose-rate image-guided brachytherapy (HDR-IGBT) using an independent end-to-end dose delivery quality assurance test at multiple institutions. The novelty of our study is that this is the first multi-institut
Autor:
Naritoshi Mukumoto, Kazusuke Maenaka, Shuji Miyamoto, T. K. Sato, Motoi Ashida, Tianyuan Wang, Ryuichi Yada, Aki Sasakura, Go Okada, Yasuyuki Shimizu, Hiroaki Akasaka, Ryohei Sasaki, Masashi Adachi
Publikováno v:
Medical Physics. 47:5235-5249
PURPOSE To develop an in vivo dosimeter system for stereotactic body radiation therapy (SBRT) that can perform accurate and precise real-time measurements, using a microsized amount of a photostimulable phosphor (PSP), BaFBr:Eu2+ . METHODS The sensit
Autor:
Tianyuan Wang, Keisuke Okumura, Taishi Matsuda, Naritoshi Mukumoto, Akihiro Takemura, Kenji Matsumoto, Ryuichi Yada, Tsukasa Wakayama, Takaharu Nishitani, Akiko Kusaka
Publikováno v:
Nihon Hoshasen Gijutsu Gakkai zasshi. 77(9)
Purpose For whole-breast irradiation after breast-conserving surgery, computed tomography simulation (CTS) and irradiation are generally performed during free breathing. In treatment planning, there are three techniques: field-in-field (FIF), physica
Autor:
Naritoshi Mukumoto, Yuya Nishimura, Kenta Morita, Masao Nakayama, Hiroaki Akasaka, Ryohei Sasaki, Keisuke Okumura, Ryuichi Yada, Ai Nakaoka, Yasuyuki Shimizu, Masanori Miyamoto, Tianyuan Wang, Katsusuke Kyotani, Sachiko Inubushi, Chiaki Ogino
Publikováno v:
Applied Nanoscience. 10:3143-3148
Nanoparticles (NPs) are useful for radiotherapy. Currently, efforts are underway globally for the development of novel titanium dioxide NPs (TiO2-NPs) that exhibit both contrast effects and anti-tumor effects. In this study, the image contrast proper
Autor:
Naoko Ikeo, Ryohei Sasaki, Sachiko Inubushi, Ai Nakaoka, Keisuke Okumura, Hiroaki Akasaka, Kenji Yoshida, Tianyuan Wang, Daisuke Miyawaki, Ryuichi Yada, Takeaki Ishihara, Toshiji Mukai
Publikováno v:
Medical physicsREFERENCES. 47(10)
Purpose To develop a novel biocompatible solid fiducial marker that prevents radiopaque imaging artifacts and also maintains high imaging contrast for kilovoltage x-ray image-guided radiation therapy. Methods The fiducial marker was made of pure zinc
Autor:
Yutaka Fujimoto, Takayuki Yanagida, Ryuichi Yada, Go Okada, Shuta Motoki, Hidehito Nanto, Eiji Kusano, Mune-aki Sakamoto
Publikováno v:
Journal of Alloys and Compounds. 863:158561
In this paper, we report optically-stimulated luminescence (OSL) properties of Eu2+-doped NaCl single crystal as a candidate phosphor for use in near real-time radiation measurement and dosimetry. The crystal was grown by the vertical Bridgman–Stoc
Autor:
Satoru Takahashi, Takeaki Ishihara, Toshiaki Minami, Ryuichi Yada, Tianyuan Wang, Naoki Yoshida, Kotaro Nishida, Ryohei Sasaki, Hiroaki Akasaka, Daisuke Miyawaki, Yasuo Ejima, Atsushi K. Kono, Kenichiro Kakutani, Yuuichi Aoyama, Noriyuki Negi, Kenji Yoshida, Naritoshi Mukumoto
Publikováno v:
Physics in Medicine & Biology. 62:6226-6245
The objective of the present study was the determination of the potential dosimetric benefits of using metal-artefact-suppressed dual-energy computed tomography (DECT) images for cases involving pedicle screw implants in spinal sites. A heterogeneous