Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Shinobu Kumagai"'
Autor:
Takumasa Tsuji, Yukina Hirata, Kenya Kusunose, Masataka Sata, Shinobu Kumagai, Kenshiro Shiraishi, Jun’ichi Kotoku
Publikováno v:
BMC Medical Imaging, Vol 23, Iss 1, Pp 1-18 (2023)
Abstract Background This study was conducted to alleviate a common difficulty in chest X-ray image diagnosis: The attention region in a convolutional neural network (CNN) does not often match the doctor’s point of focus. The method presented herein
Externí odkaz:
https://doaj.org/article/0629e299231843059371ce9592363142
Autor:
Shinobu Kumagai, Norikazu Arai, Takeshi Takata, Daisuke Kon, Toshiya Saitoh, Hiroshi Oba, Shigeru Furui, Jun’ichi Kotoku, Kenshiro Shiraishi
Publikováno v:
Journal of Contemporary Brachytherapy, Vol 12, Iss 1, Pp 53-60 (2020)
Externí odkaz:
https://doaj.org/article/2eebc58c241a40288296be8b59e98572
Autor:
Shinobu Kumagai1, Norikazu Arai1, Takeshi Takata2, Daisuke Kon1, Toshiya Saitoh3, Hiroshi Oba4, Shigeru Furui4, Jun'ichi Kotoku2, Kenshiro Shiraishi4 kshiraishi-tky@umin.ac.jp
Publikováno v:
Journal of Contemporary Brachytherapy. 2020, Vol. 12 Issue 1, p53-60. 8p.
Publikováno v:
Igaku butsuri : Nihon Igaku Butsuri Gakkai kikanshi = Japanese journal of medical physics : an official journal of Japan Society of Medical Physics. 42(2)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::a2f13f1b218f2f31f626cc548d637a3c
https://pubmed.ncbi.nlm.nih.gov/35768259
https://pubmed.ncbi.nlm.nih.gov/35768259
Autor:
Jun'ichi Kotoku, Shinobu Kumagai, Kenshiro Shiraishi, Hiroshi Oba, Daisuke Kon, Toshiya Saitoh, Takeshi Takata, Norikazu Arai, Shigeru Furui
Publikováno v:
Journal of Contemporary Brachytherapy, Vol 12, Iss 1, Pp 53-60 (2020)
Journal of Contemporary Brachytherapy
Journal of Contemporary Brachytherapy
Purpose To share the experience of an iridium-192 (192Ir) source stuck event during high-dose-rate (HDR) brachytherapy for cervical cancer. Material and methods In 2014, we experienced the first source stuck event in Japan when treating cervical canc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6c091f2cb9056f408aced2b6675b4e8
https://www.termedia.pl/First-experience-of-192Ir-source-stuck-event-during-high-dose-rate-brachytherapy-in-Japan,54,39628,1,1.html
https://www.termedia.pl/First-experience-of-192Ir-source-stuck-event-during-high-dose-rate-brachytherapy-in-Japan,54,39628,1,1.html
Autor:
Jun'ichi Kotoku, Kenshiro Shiraishi, Takenori Kobayashi, Shinobu Kumagai, Hiroshi Oba, Takeshi Takata, Takahide Okamoto, Norikazu Arai
Publikováno v:
Journal of Applied Clinical Medical Physics
Out‐of‐field organs are not commonly designated as dose calculation targets during radiation therapy treatment planning, but they might entail risks of second cancer. Risk components include specific internal body scatter, which is a dominant sou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d187ec7b0f4d4d4bf6250644fdd29ef
https://pubmed.ncbi.nlm.nih.gov/33128332
https://pubmed.ncbi.nlm.nih.gov/33128332
Publikováno v:
Acta Mechanica Sinica. 34:1048-1060
Winged animals such as insects are capable of flying and surviving in an unsteady and unpredictable aerial environment. They generate and control aerodynamic forces by flapping their flexible wings. While the dynamic shape changes of their flapping w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::368c7365e709c5804699a27a3a7e25eb
https://doi.org/10.1007/s10409-018-0789-5
https://doi.org/10.1007/s10409-018-0789-5
Autor:
Shinobu Kumagai, Kenshiro Shiraishi, Jun'ichi Kotoku, Asuka Oyama, Takeshi Takata, Yusuke Saikawa, Takenori Kobayashi, Norikazu Arai
Publikováno v:
Journal of Radiation Research
This study was conducted to improve cone-beam computed tomography (CBCT) image quality using the super-resolution technique, a method of inferring a high-resolution image from a low-resolution image. This technique is used with two matrices, so-calle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::98c7a19a6b937af321f2ea5c0b776df8
https://doi.org/10.1093/jrr/rry019
https://doi.org/10.1093/jrr/rry019
Autor:
Norikazu Arai, Kenshiro Shiraishi, Takashi Chikamatsu, Takao Okamoto, Takahide Okamoto, Jun'ichi Kotoku, Susumu Nakabayashi, Takenori Kobayashi, Shinobu Kumagai, Tatsuro Kaminaga
Publikováno v:
International Journal of Medical Physics, Clinical Engineering and Radiation Oncology. :363-375
Low-count SPECT images are well known to be smoothed strongly by a Butterworth filter for statistical noise reduction. Reconstructed images have a low signal-to-noise ratio (SNR) and spatial resolution because of the removal of high-frequency signal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63884d3fb9602b7ad7d8c020e24bdfcc
https://doi.org/10.4236/ijmpcero.2018.73030
https://doi.org/10.4236/ijmpcero.2018.73030
Autor:
Shinobu Kumagai, Takenori Kobayashi, Shigeru Furui, Norikazu Arai, Masayoshi Yamamoto, Hideyuki Maejima, Takeshi Takata, Kenshiro Shiraishi, Jun'ichi Kotoku, Hiroshi Kondo
Publikováno v:
Journal of Radiation Research
To minimise the radiation dermatitis related to interventional radiology (IR), rapid and accurate dose estimation has been sought for all procedures. We propose a technique for estimating the patient skin dose rapidly and accurately using Monte Carlo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::27e5ef7b02edca2533ba72a7be0ac8f1
http://europepmc.org/articles/PMC5951074
http://europepmc.org/articles/PMC5951074