Zobrazeno 1 - 10
of 94
pro vyhledávání: '"Toshizo, Katsuda"'
Autor:
Kenyu Yamamoto, Naoko Fujiwara, Masahiko Kiyama, Yoshihiro Takeda, Tadao Kuwano, Toshizo Katsuda, Masami Azuma, Toshinori Ito
Publikováno v:
Journal of Medical Physics, Vol 44, Iss 1, Pp 35-38 (2019)
Purpose: The purpose of this study is to build a system for effective dose display immediately after the gastric cancer X-ray screening. Materials and Methods: The regression equation of effective dose and dose area product (DAP) was introduced from
Externí odkaz:
https://doaj.org/article/2e7fefd1db3d4c92b312ca927e59b156
Autor:
Tatsuhiro Gotanda, Yasuyuki Kawaji, Hidetoshi Yatake, Shinya Imai, Takuya Akagawa, Toshizo Katsuda
Publikováno v:
Radiation Protection Dosimetry. 199:1007-1011
Mammography is one of the most effective diagnostic methods for the early detection of breast cancer; however, it poses the risk of radiation exposure. To date, mammography dosimetry has been performed according to the mean glandular dose; however, t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38a67bdef2e96ceecf81a6184eb9d21f
https://doi.org/10.1093/rpd/ncad104
https://doi.org/10.1093/rpd/ncad104
Autor:
Toshizo Katsuda, Rumi Gotanda, Tatsuhiro Gotanda, Takuya Akagawa, Nobuyoshi Tanki, Tadao Kuwano, Atsushi Noguchi, Kouichi Yabunaka
Publikováno v:
Journal of Medical Physics, Vol 42, Iss 2, Pp 86-89 (2017)
Gafchromic films have been applied to X-ray dosimetry in diagnostic radiology. To correct nonuniformity errors in Gafchromic films, X-rays in the double-exposure technique can be replaced with ultraviolet (UV)-A rays. Intensities of the incident and
Externí odkaz:
https://doaj.org/article/89011182072549c69378ec0736d4e778
Autor:
Tatsuhiro Gotanda, Toshizo Katsuda, Rumi Gotanda, Tadao Kuwano, Takuya Akagawa, Nobuyoshi Tanki, Akihiko Tabuchi, Tetsunori Shimono, Yasuyuki Kawaji
Publikováno v:
Journal of Medical Physics, Vol 41, Iss 4, Pp 266-270 (2016)
Radiochromic film dosimeters have a disadvantage in comparison with an ionization chamber in that the dosimetry process is time-consuming for creating a density-absorbed dose calibration curve. The purpose of this study was the development of a simpl
Externí odkaz:
https://doaj.org/article/29b1984e16254409bce7b3711d1b0e1a
Autor:
Koichi Yabunaka, Tatsuo Yamamoto, Hiroko Nakahira, Noriyuki Hayashi, Yoshiteru Ohno, Masayo Matsuzaki, Toshizo Katsuda
Publikováno v:
Journal of Diagnostic Medical Sonography. 38:354-357
Traditionally, large bowel obstruction (LBO) can be due to a neoplasm, most often colorectal cancer. Also, fecal impaction (FI) is a common disease, which occurs in a variety of ages and is significantly increased in the elderly. This case report is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35330759ad78e98933534bacec195e5b
https://doi.org/10.1177/87564793221078840
https://doi.org/10.1177/87564793221078840
Autor:
Toshizo Katsuda, Rumi Gotanda, Tatsuhiro Gotanda, Tadao Kuwano, Nobuyoshi Tanki, Kouichi Yabunaka
Publikováno v:
Journal of Applied Clinical Medical Physics. 24
During a single scan using computed tomography, an X-ray tube orbits along a 360°-circular path around the patient. A scan obtained using the half-cylindrical type phantoms with a radiochromic film sandwiched in between reveals a pixel value map ill
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6aa5348cdd7b4c0b41d72edf00f8cd1
https://doi.org/10.1002/acm2.13897
https://doi.org/10.1002/acm2.13897
Autor:
Rumi Gotanda, Masashi Sasaki, Yasuyuki Kawaji, Toshizo Katsuda, Hidetoshi Yatake, Shinya Imai, Takuya Akagawa, Tatsuhiro Gotanda
Publikováno v:
Radiation Protection Dosimetry. 196:226-233
This study developed a phantom with a shape similar to that of the breast and use GAFCHROMIC films that can be placed inside the phantom to measure the detailed breast dose distribution in mammography. GAFCHROMIC EBT3 was placed on the block cube bre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e70b951876cdfd8d000332850dad1aad
https://doi.org/10.1093/rpd/ncab153
https://doi.org/10.1093/rpd/ncab153
Autor:
Tadao Kuwano, Shinya Imai, Toshizo Katsuda, Nobuyoshi Tanki, Yasuyuki Kawaji, Hideki Fujita, Atsushi Noguchi, Tatsuhiro Gotanda, Rumi Gotanda, Yoshihiro Takeda
Publikováno v:
Radiation Protection Dosimetry. 193:96-104
In this paper, we propose a novel radiochromic film (RCF)-based computed tomography (CT) dosimetry method, which is different from the method based on CT dose index. RCF dosimetry using Gafchromic QA2 films was performed using two lengths of film-fol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::27c64536c354555e284c1b0ef441f45b
https://doi.org/10.1093/rpd/ncab033
https://doi.org/10.1093/rpd/ncab033
Publikováno v:
Physica Medica. 104:S8
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29b144566e083853fdf3c09539f5bb69
https://doi.org/10.1016/s1120-1797(22)02131-7
https://doi.org/10.1016/s1120-1797(22)02131-7
Autor:
Toshizo Katsuda, Rumi Gotanda, Atsushi Noguchi, Kouichi Yabunaka, Tadao Kuwano, Takuya Akagawa, Nobuyoshi Tanki, Tatsuhiro Gotanda
Publikováno v:
Polish Journal of Medical Physics and Engineering. 24:189-193
The strength and density change of the ultraviolet (UV) ray of Gafchromic EBT2 were investigated. Previous studies suggested that UV-A rays can be substituted for the x-ray double-exposure technique to correct Gafchromic EBT2’s non-uniformity error
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc76b82f1a188850d85e1e8779d17602
https://doi.org/10.2478/pjmpe-2018-0026
https://doi.org/10.2478/pjmpe-2018-0026