Zobrazeno 1 - 10
of 56
pro vyhledávání: '"Riwa, Kishimoto"'
Autor:
Junko Ota, Kensuke Umehara, Jeff Kershaw, Riwa Kishimoto, Yoshiyuki Hirano, Yasuhiko Tachibana, Hisateru Ohba, Takayuki Obata
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-9 (2022)
Abstract The spatial resolution of fMRI is relatively poor and improvements are needed to indicate more specific locations for functional activities. Here, we propose a novel scheme, called Static T2*WI-based Subject-Specific Super Resolution fMRI (S
Externí odkaz:
https://doaj.org/article/cd6b5457fd60405682bad293e5d798b8
Autor:
Hiroki Tsuchiya, Yasuhiko Tachibana, Riwa Kishimoto, Tokuhiko Omatsu, Eika Hotta, Katsuyuki Tanimoto, Masaru Wakatsuki, Takayuki Obata, Hiroshi Tsuji
Publikováno v:
Diagnostics, Vol 12, Iss 11, p 2692 (2022)
Contrast-enhanced imaging for choroidal malignant melanoma (CMM) is mostly limited to detecting metastatic tumors, possibly due to difficulties in fixing the eye position. We aimed to (1) validate the appropriateness of estimating iodine concentratio
Externí odkaz:
https://doaj.org/article/6f7dcfe585ce419a8453fe3e02a6318d
Autor:
Masashi Usumura, Riwa Kishimoto, Koki Ishii, Eika Hotta, Jeff Kershaw, Tatsuya Higashi, Takayuki Obata, Mikio Suga
Publikováno v:
PLoS ONE, Vol 16, Iss 5, p e0250667 (2021)
We evaluated the long-term stability of a newly developed viscoelastic phantom made of polyacrylamide (PAAm) gel for magnetic resonance elastography (MRE) and ultrasound-based shear-wave elastography (US SWE). The stiffness of the cylindrical phantom
Externí odkaz:
https://doaj.org/article/8ca33271b5a74a54841c282ac97d9066
Publikováno v:
Journal of Radiation Research. 64:294-299
Seven emergency nuclear workers, who had internal exposure due to an intake of radionuclides, mainly I-131, during the emergency response operation in March 2011, after the accident at the Tokyo Electric Power Company (TEPCO) Fukushima Daiichi Nuclea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b727931efa4ff8f7f2431d97548796cc
https://doi.org/10.1093/jrr/rrac092
https://doi.org/10.1093/jrr/rrac092
Autor:
Moyoko Tomiyasu, Yasuka Sahara, Etsuko Mitsui, Hiroki Tsuchiya, Takamasa Maeda, Nobuhiro Tomoyori, Makoto Kawashima, Toshifumi Nogawa, Riwa Kishimoto, Yuhei Takado, Tatsuya Higashi, Atsushi Mizota, Kohsuke Kudo, Takayuki Obata
Publikováno v:
Journal of Magnetic Resonance Imaging. 57:845-853
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba099f7df988b3f226485245b3b80286
https://doi.org/10.1002/jmri.28345
https://doi.org/10.1002/jmri.28345
Autor:
Riwa, Kishimoto, Suga, Mikio, Usumura, Masashi, Iijima, Hiroko, Masahiro, Yoshida, Hachiya, Hiroyuki, Shiina, Tsuyoshi, Yamakawa, Makoto, Konno, Kei, Takayuki, Obata, Yamaguchi, Tadashi, Mikio, Suga, Masashi, Usumura
Publikováno v:
Journal of Medical Ultrasonics. 49(2):143-152
Purpose To quantify the bias of shear wave speed (SWS) measurements in a viscoelastic phantom across six different ultrasound (US) systems and to compare the SWS with those from transient elastography (TE) and magnetic resonance elastography (MRE). M
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::50b51ab6ac122a9a5e196c202bc6c439
https://repo.qst.go.jp/records/85236
https://repo.qst.go.jp/records/85236
ヨード造影剤静注後にアレルギー症状を示し、直前の単純CTでは認めなかった十二指腸～空腸の壁肥厚を造影後CTで認めた症例を経験したので、若干の文献的考察を加えて報告する。 症
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::7634cc162b64f2f1b8b7dd69068728b2
https://repo.qst.go.jp/records/86397
https://repo.qst.go.jp/records/86397
Autor:
Tachibana, Yasuhiko, Hagiwara, Akifumi, Hori, Masaaki, Kershaw, Jeffrey, Nakazawa, Misaki, Omatsu, Tokuhiko, Kishimoto, Riwa, Yokoyama, Kazumasa, Hattori, Nobutaka, Aoki, Shigeki, Higashi, Tatsuya, Obata, Takayuki, Yasuhiko, Tachibana, Tokuhiko, Omatsu, Riwa, Kishimoto, Tatsuya, Higashi, Takayuki, Obata
Publikováno v:
Magnetic Resonance in Medical Sciences. 19(4):324-332
PURPOSE: A current algorithm to obtain a synthetic myelin volume fraction map (SyMVF) from rapid simultaneous relaxometry imaging (RSRI) has a potential problem, that it does not incorporate information from surrounding pixels. The purpose of this st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=jairo_______::f5d59f708c30384534fe209afa05ad62
https://repo.qst.go.jp/records/79643
https://repo.qst.go.jp/records/79643
Autor:
Tatsuya Higashi, Yoko Ikoma, Goro Kasuya, Takayuki Obata, Hiroshi Tsuji, Tokuhiko Omatsu, Hirokazu Makishima, Riwa Kishimoto, Yasuhiko Tachibana
Publikováno v:
Magnetic Resonance Imaging. 66:185-192
Purpose Dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) measures changes in the concentration of an administered contrast agent to quantitatively evaluate blood circulation in a tumor or normal tissues. This method uses a pharmacokinet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::478db139e317b866eb6b8175e709ace5
https://doi.org/10.1016/j.mri.2019.08.034
https://doi.org/10.1016/j.mri.2019.08.034
Autor:
Akifumi Hagiwara, Tatsuya Higashi, Misaki Nakazawa, Jeff Kershaw, Nobutaka Hattori, Riwa Kishimoto, Kazumasa Yokoyama, Yasuhiko Tachibana, Takayuki Obata, Shigeki Aoki, Tokuhiko Omatsu, Masaaki Hori
Publikováno v:
Magnetic Resonance in Medical Sciences
Purpose: A current algorithm to obtain a synthetic myelin volume fraction map (SyMVF) from rapid simultaneous relaxometry imaging (RSRI) has a potential problem, that it does not incorporate information from surrounding pixels. The purpose of this st
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0ebaa7aa530e7ba10840194d5fa6603
https://doi.org/10.2463/mrms.mp.2019-0075
https://doi.org/10.2463/mrms.mp.2019-0075