Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Mami, Akimoto"'
Autor:
Takahiro Fujimoto, Mitsuhiro Nakamura, Mami Akimoto, Yuta Miyamae, Makoto Sasaki, Shinsuke Yano
Publikováno v:
Journal of Applied Clinical Medical Physics
This study investigated the effects of respiratory motion, including unwanted breath holding, on the target volume and centroid position on four‐dimensional computed tomography (4DCT) imaging. Cine 4DCT images were reconstructed based on a time‐b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::785d184b5cc282ce23a0c77255962f06
http://europepmc.org/articles/PMC6964747
http://europepmc.org/articles/PMC6964747
Autor:
Mitsuhiro Nakamura, Y. Ishihara, Yuki Miyabe, Mami Akimoto, Masahiro Hiraoka, Nobutaka Mukumoto, Tomohiro Ono, Takashi Mizowaki, Kunio Takahashi
Publikováno v:
Radiotherapy and Oncology. 129:166-172
Purpose The aim was to examine the feasibility of a dynamic tumor-tracking volumetric modulated arc therapy (DTT-VMAT) technique using a gimbal-mounted linac and assess its positional, mechanical and dosimetric accuracy. Materials and methods DTT-VMA
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e830a0ca0c63612d4b398847e177e1a
https://doi.org/10.1016/j.radonc.2017.10.034
https://doi.org/10.1016/j.radonc.2017.10.034
Autor:
Y. Ishihara, Takashi Mizowaki, Mitsuhiro Nakamura, Tomohiro Ono, Mami Akimoto, Yuki Miyabe, Nobutaka Mukumoto
Publikováno v:
Medical Physics. 45:1029-1035
PURPOSE Our aim was to develop a portable quality control (QC) application using a thermometer, a barometer, an angle gauge, and a range finder implemented in a tablet-type consumer electronic device (CED) and to assess the accuracies of the measurem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e053278a4baa1358524a6637317856e
https://doi.org/10.1002/mp.12786
https://doi.org/10.1002/mp.12786
Autor:
Hideaki Hirashima, Nobutaka Mukumoto, Mami Akimoto, Takashi Mizowaki, Mitsuhiro Nakamura, Y. Ishihara, Tsuneyuki Tomita, Kenji Kitsuda, Takashi Ishigaki, Yoshinori Hirose
Publikováno v:
International Journal of Medical Physics, Clinical Engineering and Radiation Oncology. :74-86
Introduction: To compare the measured dose distributions to calculated ones in dose-to-water (Dw) and dose-to-medium (Dm) reporting modes for simple plans and patient-specific intensity modulated radiation therapy (IMRT) and volumetric modulated arc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::680f9e2a7a9e85bceda5349da4835d7e
https://doi.org/10.4236/ijmpcero.2018.71007
https://doi.org/10.4236/ijmpcero.2018.71007
Autor:
Kenji Yokota, Mitsuhiro Nakamura, Mami Akimoto, Yuki Miyabe, Shuji Kaneko, Nobutaka Mukumoto, Masahiro Yamada, Masaki Kokubo, Satoshi Itasaka, Yukinori Matsuo, Akira Nakamura, Kunio Takahashi, Takashi Mizowaki, Masahiro Hiraoka
Publikováno v:
Medical Physics. 43:6364-6374
Purpose: The purposes of this study were two-fold: first, to develop a four-axis moving phantom for patient-specific quality assurance (QA) in surrogate signal-based dynamic tumor-tracking intensity-modulated radiotherapy (DTT-IMRT), and second, to e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1bf6242f0e5f633353090343ba49a581
https://doi.org/10.1118/1.4966130
https://doi.org/10.1118/1.4966130
Autor:
Mami Akimoto, Takashi Mizowaki, Yukinori Matsuo, Masanori Takamiya, Nami Ueki, Masahiro Yamada, Masahiro Hiraoka, Mitsuhiro Nakamura, H. Tanabe, Akio Itoh, Masaki Kokubo
Publikováno v:
Medical Physics. 43:1907-1912
Purpose: To assess the target localization error (TLE) in terms of the distance between the target and the localization point estimated from the surrogates (|TMD|), the average of respiratory motion for the surrogates and the target (|aRM|), and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23012361a694e10f829115d99cd9f555
https://doi.org/10.1118/1.4944594
https://doi.org/10.1118/1.4944594
Autor:
Mami Akimoto, Satoshi Itasaka, Masahiro Hiraoka, Akira Nakamura, Yoko Goto, Michio Yoshimura, Y. Ishihara, Nobutaka Mukumoto, Mitsuhiro Nakamura, Takahiro Kishi, Takashi Mizowaki, Shinsuke Yano, Yukinori Matsuo
Publikováno v:
Scientific Reports
Scientific Reports, Vol 8, Iss 1, Pp 1-10 (2018)
Scientific Reports, Vol 8, Iss 1, Pp 1-10 (2018)
Intensity-modulated radiotherapy (IMRT) is now regarded as an important treatment option for patients with locally advanced pancreatic cancer (LAPC). To reduce the underlying tumor motions and dosimetric errors during IMRT as well as the burden of re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95d32ef54cd24b408bbe09e3f94b3f05
https://pubmed.ncbi.nlm.nih.gov/30459454
https://pubmed.ncbi.nlm.nih.gov/30459454
Autor:
Mitsuhiro Nakamura, H. Tanabe, Kenji Yokota, Yukinori Matsuo, Masanori Takamiya, Mami Akimoto, Masaki Kokubo, Takashi Mizowaki, Masahiro Hiraoka, Nami Ueki, Masahiro Yamada, Nobutaka Mukumoto
Publikováno v:
Physica Medica. 31:934-941
Purpose To assess target localization errors (TLEs) from implanted fiducial markers by three different centers of gravity (CG) and three different multiple regression analysis (MRA) approaches. Methods The three-dimensional (3D) positions of the mark
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cdf8cdec6e52e9668818e4799b64ff71
https://doi.org/10.1016/j.ejmp.2015.06.012
https://doi.org/10.1016/j.ejmp.2015.06.012
Autor:
Nami Ueki, Yukinori Matsuo, Masaki Kokubo, Nobutaka Mukumoto, Mitsuhiro Nakamura, Masahiro Hiraoka, Mami Akimoto, Masahiro Yamada, H. Tanabe, Takashi Mizowaki
Publikováno v:
Physica Medica. 31:204-209
Purpose To assess the utility of 10 s and 20 s modeling periods, rather than the 40 s currently used, in the clinical construction of practical correlation models (CMs) in dynamic tumor tracking irradiation using the Vero4DRT. Methods The CMs with fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2dab438952f1d4e7aacd50a08e263d14
https://doi.org/10.1016/j.ejmp.2015.01.004
https://doi.org/10.1016/j.ejmp.2015.01.004
Autor:
Keiko Shibuya, Mitsuhiro Nakamura, Masahiro Hiraoka, Akira Nakamura, Mami Akimoto, Shinsuke Yano, Takahiro Kishi, Tomohiro Ono, Manabu Nakata, Takashi Mizowaki, Satoshi Itasaka
Publikováno v:
Journal of Applied Clinical Medical Physics
We assessed interfraction positional variation in pancreatic tumors using daily breath‐hold cone‐beam computed tomography at end‐exhalation (EE) with visual feedback (BH‐CBCT). Eleven consecutive patients with pancreatic cancer who underwent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6978f704e718cd4dde7bc9a4bd584047
https://doi.org/10.1120/jacmp.v16i2.5123
https://doi.org/10.1120/jacmp.v16i2.5123