Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Naoki Isomura"'
Autor:
Akihiro Takemura, Akira Nagano, Hironori Kojima, Tomohiro Ikeda, Noriomi Yokoyama, Kosuke Tsukamoto, Kimiya Noto, Naoki Isomura, Shinichi Ueda, Hiroki Kawashima
Publikováno v:
Physics and Imaging in Radiation Oncology, Vol 6, Iss , Pp 77-82 (2018)
Background and purpose: In adaptive radiotherapy, deformable image registration (DIR) is used to propagate delineations of tumors and organs into a new therapy plan and to calculate the accumulated total dose. Many DIR accuracy metrics have been prop
Externí odkaz:
https://doaj.org/article/dabe1b574bf044258088fcff9dc80a77
Autor:
Narumi Kumahara, Akihiro Takemura, Shouta Ishihara, Kimiya Noto, Hironori Kojima, Naoki Isomura, Haruna Yokoyama, Itsuki Goto
Publikováno v:
Radiological Physics and Technology. 16:227-234
Autor:
Trang Hong Thi Nguyen, Naoki Isomura, Kimiya Noto, Shinichi Ueda, Akihiro Takemura, Hironori Kojima
Publikováno v:
Journal of Radiotherapy in Practice. 20:316-320
Aim:To investigate the effect of different energies on dose distribution in volumetric-modulated arc therapy (VMAT) plans for head and neck cancer.Materials and methods:Data from nine patients undergoing VMAT plans using 6 MV, 10 MV and dual-energy X
Autor:
Hironori Kojima, Akihiro Takemura, Kimiya Noto, Ryoto Kaido, Tsubasa Osawa, Naoki Isomura, Shinichi Ueda
Publikováno v:
Japanese Journal of Radiological Technology. 76:665-673
Purpose The aim of this study was to analyze improvement prediction on contour deformation accuracy using deformable image registration (DIR) results compared to rigid image registration (RIR) results. Method Radiotherapy plans for 31 cases (seven he
Autor:
Tomohiro Ikeda, Noriomi Yokoyama, Hiroki Kawashima, Kosuke Tsukamoto, Naoki Isomura, Hironori Kojima, Kimiya Noto, Akira Nagano, Akihiro Takemura, Shinichi Ueda
Publikováno v:
Physics and Imaging in Radiation Oncology, Vol 6, Iss, Pp 77-82 (2018)
Physics and Imaging in Radiation Oncology
Physics and Imaging in Radiation Oncology
Background and purpose: In adaptive radiotherapy, deformable image registration (DIR) is used to propagate delineations of tumors and organs into a new therapy plan and to calculate the accumulated total dose. Many DIR accuracy metrics have been prop
Autor:
Hironori Kojima, Tomoyasu Kumano, Shinichi Ueda, Naoki Isomura, Kumiko Togawa, Tomohiro Yokoi, Akihiro Takemura, Kimiya Noto
Publikováno v:
Radiological Physics and Technology. 9(2):178-186
In volumetric modulated arc therapy (VMAT) for prostate cancer, a positional and rotational error correction is performed according to the position and angle of the prostate. The correction often involves body leaning, and there is concern regarding
Autor:
Akihiro Takemura, Kimiya Noto, Hiroaki Yamamoto, Kazuya Nakayama, Takuya Wada, Hironori Kojima, Naoki Isomura
Publikováno v:
IFMBE Proceedings ISBN: 9789811090226
Optical computed tomography (optical CT) is a reading device of the dyed gel dosimeters. We are developing the optical CT for the evaluation of three dimensional radiation absorbed dose distribution in the dyed gel dosimeters. We made dyed gel with l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f70d95f8b4a51e8ffc66a1de7ad9732b
https://doi.org/10.1007/978-981-10-9023-3_107
https://doi.org/10.1007/978-981-10-9023-3_107
Autor:
Shinichi Ueda, Mei Tokai, Hironori Kojima, Akihiro Takemura, Shogo Tanabe, Naoki Isomura, Kimiya Noto
Publikováno v:
Journal of Radiotherapy in Practice. 14:410-417
Aim To use cone-beam computed tomography (CBCT) images for treatment planning, the Hounsfield unit (HU)-electron density (ED) calibration table for CBCT should be stable. The purpose of this study was to verify the stability of the HU values for the
Autor:
Shinichi Ueda, Naoki Isomura, Hironori Kojima, Kimiya Noto, Tomoyasu Kumano, Shigeyuki Takamatsu, Akihiro Takemura, Tsuyoshi Takanaka
Publikováno v:
Journal of Radiotherapy. 2014:1-5
Purpose. Accuracy of dose delivery in multiple breath-hold segmented volumetric modulated arc therapy (VMAT) was evaluated in comparison to noninterrupted VMAT using a static phantom. Material and Methods. Five VMAT plans were evaluated. A Synergy li
Publikováno v:
International Journal of Medical Physics,Clinical Engineering and Radiation Oncology. 2(3):69-75
In this study, we compared the motion accuracy of a six degrees of freedom (6D) couch for precision radiotherapy with or without weights attached to the couch. Two digital cameras were focused on the iso-center of a linear accelerator. Images of a ne