Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Hiroki Miyatake"'
Autor:
Yusuke Inoue, Masahiro Mori, Hiroyasu Itoh, Kohei Mitsui, Hiroki Miyatake, Takuro Yamane, Hirofumi Hata
Publikováno v:
Tomography, Vol 10, Iss 1, Pp 14-24 (2023)
The effective dose (ED) in computed tomography (CT) may be calculated by multiplying the dose–length product (DLP) by a conversion factor. As children grow, automatic exposure control increases the DLP, while the conversion factor decreases; these
Externí odkaz:
https://doaj.org/article/a110674776bf4fac997b2c3817b1c8dd
Autor:
Yusuke Inoue, Hiroyasu Itoh, Hiroki Miyatake, Hirofumi Hata, Ryosuke Sasa, Nao Shiibashi, Kohei Mitsui
Publikováno v:
Tomography, Vol 8, Iss 6, Pp 2929-2938 (2022)
We investigated the relationship between the head size and radiation dose in pediatric brain computed tomography (CT) to evaluate the validity of automatic exposure control (AEC). Phantom experiments were performed to assess image noise with and with
Externí odkaz:
https://doaj.org/article/d1898cca805547b7a13c096f830b28fa
Autor:
Mio Okamoto, Tomoyuki Hasegawa, Keiichi Oda, Hiroki Miyatake, Kei Kikuchi, Yusuke Inoue, Yoko Satoh, Yuichi Inaoka, Masami Kawamoto, Koji Shima, Kenji Kanbayashi, Miho Yoshii, Tomoyuki Kanno, Kei Wagatsuma, Masatoshi Hashimoto
Publikováno v:
Radiological Physics and Technology. 16:49-56
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40e893c8818154140f78ff999c36c2fa
https://doi.org/10.1007/s12194-022-00692-0
https://doi.org/10.1007/s12194-022-00692-0
Autor:
Mio, Okamoto, Tomoyuki, Hasegawa, Keiichi, Oda, Hiroki, Miyatake, Kei, Kikuchi, Yusuke, Inoue, Yoko, Satoh, Yuichi, Inaoka, Masami, Kawamoto, Koji, Shima, Kenji, Kanbayashi, Miho, Yoshii, Tomoyuki, Kanno, Kei, Wagatsuma, Masatoshi, Hashimoto
Publikováno v:
Radiological physics and technology.
Since the early 2000s, many types of positron emission tomography (PET) scanners dedicated to breast imaging for the diagnosis of breast cancer have been introduced. However, conventional performance evaluation methods developed for whole-body PET sc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::8f86f959bcd7db3121caba05abdea068
https://pubmed.ncbi.nlm.nih.gov/36622563
https://pubmed.ncbi.nlm.nih.gov/36622563
Autor:
Takahiro Yamada, Hiroki Miyatake, Hidetake Ishizu, Mio Okamoto, Tomoyuki Hasegawa, Kei Kikuchi, Takahiro Mikamoto, Yasushi Sato, Yusuke Inoue
Publikováno v:
Radiological Physics and Technology. 13:170-176
A novel traceable point-like 68Ge/68Ga source was developed for calibration of positron emission tomography (PET) scanners. The source was equipped with a spherically symmetric acrylic positron absorber. The physical characteristics of photons emitte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::582ebbc88bc9ef534b59c3f1546c4652
https://doi.org/10.1007/s12194-020-00565-4
https://doi.org/10.1007/s12194-020-00565-4
Publikováno v:
Journal of Radiological Protection. 42:021525
In whole-body positron emission tomography (PET)/computed tomography (CT), it is important to optimise the CT radiation dose. We have investigated factors affecting the dose-length product (DLP) of the CT component of whole-body PET/CT and derived eq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cab39b88598689f07beb6646cb128a4e
https://doi.org/10.1088/1361-6498/ac6a89
https://doi.org/10.1088/1361-6498/ac6a89
Autor:
Tomoyuki, Hasegawa, Mio, Okamoto, Takahiro, Yamada, Hidetake, Ishizu, Takahiro, Mikamoto, Yasushi, Sato, Hiroki, Miyatake, Kei, Kikuchi, Yusuke, Inoue
Publikováno v:
Radiological physics and technology. 13(2)
A novel traceable point-like
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::f425c1d696c5f1fc9e404d5783d9161b
https://pubmed.ncbi.nlm.nih.gov/32361900
https://pubmed.ncbi.nlm.nih.gov/32361900
Publikováno v:
Annals of Nuclear Medicine. 33:169-176
Radiation exposure in CT is modulated by automatic exposure control (AEC) mainly based on scout images. We evaluated CT radiation dose in whole-body PET/CT in relation to scout imaging direction and arm position, and investigated the behavior of AEC.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ffc381cab1db6748dbf7b2c796cc3b36
https://doi.org/10.1007/s12149-018-1318-0
https://doi.org/10.1007/s12149-018-1318-0
Publikováno v:
Clinical Imaging. 52:23-27
The aim of this study was to investigate the reliability of cerebral blood flow (CBF) measurements obtained by 3D pseudo-continuous arterial spin labeling (pCASL) imaging according to imaging parameters, scanner model, and field strength. We acquired
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4243f774bd8ce76ed60d57bff0c2dc7
https://doi.org/10.1016/j.clinimag.2018.02.016
https://doi.org/10.1016/j.clinimag.2018.02.016
Publikováno v:
Annals of Nuclear Medicine. 32:695-701
With the advancement of reperfusion therapy in stroke patients, assessment of perfusion status after therapy is gaining importance. Hyperperfusion tends to be underestimated by the conventional early imaging of 123I-IMP brain perfusion SPECT. We eval
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::271d1dadf86410f94c9c7adc9be73d5d
https://doi.org/10.1007/s12149-018-1293-5
https://doi.org/10.1007/s12149-018-1293-5