Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Osamu, Asanuma"'
Publikováno v:
Nihon Hoshasen Gijutsu Gakkai zasshi. 75(9)
Purpose Computed tomography (CT) attenuation correction of myocardial perfusion in single-photon emission computed tomography (SPECT) /CT systems is possibility of misregistration between emission and transmission scans. This study aimed to evaluate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e1a6c01ce8e4b4e883fcc2851ae7f0a6
https://pubmed.ncbi.nlm.nih.gov/31548466
https://pubmed.ncbi.nlm.nih.gov/31548466
Autor:
Gerard Bengua, Osamu Asanuma, Masakazu Hori, Kenichi Tanaka, Kunihiko Tateoka, Takahiro Hayashi, Iori Sumida, Yutaka Takahashi, Ken-ichi Kamo, Tsuyoshi Kajimoto, Satoru Endo, Koh-ichi Sakata
Publikováno v:
Journal of Radiation Research
This study aims to demonstrate the feasibility of a method for estimating the strength of a moving brachytherapy source during implantation in a patient. Experiments were performed under the same conditions as in the actual treatment, except for one
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84adefb849a216463217b3d0eede704d
https://pubmed.ncbi.nlm.nih.gov/29659987
https://pubmed.ncbi.nlm.nih.gov/29659987
Autor:
Koh-ichi Sakata, Jun Takada, Kaori Sato, Masaru Takagi, Kenichi Tanaka, Masakazu Hori, Ken-ichi Kamo, Hiromitsu Takeda, Gerard Bengua, Osamu Asanuma, Masato Hareyama, Kunihiko Tateoka, Satoru Endo
Publikováno v:
Journal of Radiation Research
This study sought to demonstrate the feasibility of estimating the source strength during implantation in brachytherapy. The requirement for measuring the strengths of the linked sources was investigated. The utilized sources were (125)I with air ker
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3299238eacfb7a76c8df413f0da28a9a
https://doi.org/10.1093/jrr/rru058
https://doi.org/10.1093/jrr/rru058
Autor:
Jun Takada, Osamu Asanuma, Hiromitsu Takeda, Kunihiko Tateoka, Ken-ichi Kamo, Kenichi Tanaka, Kaori Sato, Masato Hareyama, Masaru Takagi
Publikováno v:
Journal of Radiation Research
The post-implantation dosimetry for brachytherapy using Monte Carlo calculation by EGS5 code combined with the source strength regression was investigated with respect to its validity. In this method, the source strength for the EGS5 calculation was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ead0d909ee1555fbef0839191864488
https://doi.org/10.1093/jrr/rrt147
https://doi.org/10.1093/jrr/rrt147
Autor:
Jun Takada, Masaru Takagi, Osamu Asanuma, Kaori Sato, Kunihiko Tateoka, Kenichi Tanaka, Ken-ichi Kamo, Satoru Endo, Masato Hareyama, Hiromitsu Takeda
Publikováno v:
Journal of Radiation Research
The aim of this study is to demonstrate the feasibility of estimating the strength of the moving radiation source during patient implantation. The requirement for the counting time was investigated by comparing the results of the measurements for the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6cbef853cff74db3411681905b643717
https://doi.org/10.1093/jrr/rrt087
https://doi.org/10.1093/jrr/rrt087
Publikováno v:
Nihon Hoshasen Gijutsu Gakkai zasshi. 72(3)
Measurement of the half-value layer (HVL) is a difficult task in computed tomography (CT) , because a nonrotating X-ray tube must be used. The purpose of this study is to develop a lead-covered case, which enables HVL measurements with a rotating CT
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b9cdcbe277d503c5e6ed3936372aacd
https://pubmed.ncbi.nlm.nih.gov/27000673
https://pubmed.ncbi.nlm.nih.gov/27000673
Autor:
Ayaka, Hirakuri, Kanako, Numasawa, Hideki, Takeishi, Minato, Satomura, Hiromitsu, Takeda, Kuniaki, Harada, Osamu, Asanuma, Motomichi, Sakata
Publikováno v:
Japanese Journal of Radiological Technology. 68:720-725
The exposure of the eye lens caused by multi-detector row computed tomography (MDCT) of the temporal bone is a serious problem. Our aim was to evaluate the radiation dose to the eye lens by different scan baselines (orbitomeatal line; OML, acanthiome
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::403ce48a4ee69fce48fb68f026384e7f
https://doi.org/10.6009/jjrt.2012_jsrt_68.6.720
https://doi.org/10.6009/jjrt.2012_jsrt_68.6.720
Autor:
Masato Hareyama, Osamu Asanuma, Hiromitsu Takeda, Ken-ichi Kamo, Kaori Sato, Gerard Bengua, Toshikazu Ueda, Masaru Takagi, Kunihiko Tateoka, Kenichi Tanaka, Jun Takada
Publikováno v:
Medical Physics. 38:3069-3076
PURPOSE The aim of this study was to develop a dose calculation method which is applicable to the interseed attenuation and the geometry lacking the equilibrium radiation scatter conditions in brachytherapy. METHODS The dose obtained from measurement
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::944d25a5a896f66be09a9555cfbe489c
https://doi.org/10.1118/1.3590370
https://doi.org/10.1118/1.3590370
Autor:
Kunihiko Tateoka, Osamu Asanuma, Kaori Sato, Jun Takada, Masaru Takagi, Kenichi Tanaka, Hiromitsu Takeda, Masato Hareyama, Ken-ichi Kamo
Publikováno v:
Progress in Nuclear Science and Technology. 4:888-890
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3af12d35c502c06332d4324470296ef7
https://doi.org/10.15669/pnst.4.888
https://doi.org/10.15669/pnst.4.888
Autor:
Kenichi, Tanaka, Kunihiko, Tateoka, Osamu, Asanuma, Ken-ichi, Kamo, Gerard, Bengua, Kaori, Sato, Toshikazu, Ueda, Hiromitsu, Takeda, Masaru, Takagi, Masato, Hareyama, Jun, Takada
Publikováno v:
Medical physics. 38(6)
The aim of this study was to develop a dose calculation method which is applicable to the interseed attenuation and the geometry lacking the equilibrium radiation scatter conditions in brachytherapy.The dose obtained from measurement with a radiophot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::f9b587def945d2021f3d4f2ffe5e3582
https://pubmed.ncbi.nlm.nih.gov/21815380
https://pubmed.ncbi.nlm.nih.gov/21815380