Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Kazumasa Ishizaka"'
Autor:
Makoto Amanuma, Tomoya Takayanagi, Tomonari Sano, Takako Sekine, Hideyuki Matsutani, Hitomi Morita, Kazumasa Ishizaka, Takehiro Arai
Publikováno v:
Japanese Journal of Radiological Technology. 74:140-147
Coronary computed tomography angiography (CCTA) was performed in 283 patients with atrial fibrillation (Af) using a prospective electocardiogeaphic gated scanning with a manual exposure-termination technique. When preparatory 5-beat scanning containe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::824867ef488fb4f9520a8678a726bc92
https://doi.org/10.6009/jjrt.2018_jsrt_74.2.140
https://doi.org/10.6009/jjrt.2018_jsrt_74.2.140
Autor:
Makoto Amanuma, Takehiro Arai, Hitomi Morita, Masato Ichiba, Kazumasa Ishizaka, Hideyuki Matsutani, Tomoya Takayanagi, Takako Sekine, Shinichi Takase, Tomonari Sano
Publikováno v:
Japanese Journal of Radiological Technology. 73:460-466
Background Coronary computed tomography angiography (CCTA) in patients with pacemaker suffers from metallic lead-induced artifacts, which often interfere with accurate assessment of coronary luminal stenosis. The purpose of this study was to assess a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8a1fa1df7abce66451efe2e21647238a
https://doi.org/10.6009/jjrt.2017_jsrt_73.6.460
https://doi.org/10.6009/jjrt.2017_jsrt_73.6.460
Autor:
Tomoya Takayanagi, Tomonari Sano, Hitomi Morita, Takehiro Arai, Makoto Amanuma, Takako Sekine, Hideyuki Matsutani, Takeshi Kondo, Kazumasa Ishizaka, Kazumasa Arakita, Shinichi Takase, Akiko Iwasa
Publikováno v:
The International Journal of Cardiovascular Imaging. 31:1635-1642
To investigate the clinical usefulness of subtraction coronary computed tomographic angiography (CCTA) in patients with severe calcification. A 320-row area detector CT system was used in this study. The subjects were 78 patients (47 men and 31 women
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a591a9649432a493883fbd94ece08a52
https://doi.org/10.1007/s10554-015-0746-3
https://doi.org/10.1007/s10554-015-0746-3
Autor:
Ian Schofield, Martin Connors, Kazumasa Ishizaka, Ryuho Kataoka, Kazuo Shiokawa, Yukinaga Miyashita, Naoki Sunagawa, Sungeun Lee, Fuminori Tsuchiya, Yoshizumi Miyoshi, Yu Yokoyama, Reiko Nomura, Satoshi Yagitani, Akimasa Ieda, Mitsunori Ozaki
Publikováno v:
Journal of Geophysical Research: Space Physics. 119:7363-7379
We report observations of very low frequency (VLF) and extremely low frequency (ELF) chorus waves taken during the ELF/VLF Campaign observation with High-resolution Aurora Imaging Network (VLF-CHAIN) of 17–25 February 2012 at subauroral latitudes a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::edbb635acf365140f80ff04637d5893b
https://doi.org/10.1002/2014ja020161
https://doi.org/10.1002/2014ja020161
Autor:
Tomoya Takayanagi, Takeshi Kondo, Kazumasa Ishizaka, Takehiro Arai, Hitomi Morita, Shinichi Takase, Takako Sekine, Makoto Amanuma, Tomonari Sano, Hideyuki Matsutani
Publikováno v:
Nihon Hoshasen Gijutsu Gakkai zasshi. 72(6)
BACKGROUND A clear coronary CT angiography (CCTA) can be obtained when temporal resolution (TR) is shorter than slow filling (SF) duration. The SF duration was calculated by the following equation: SF=-443+0.742 (RR-PQ). Although, the TR of half and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1f9de71a576de705f61636de7867914
https://pubmed.ncbi.nlm.nih.gov/27320153
https://pubmed.ncbi.nlm.nih.gov/27320153
Autor:
Akiko Iwasa, Takako Sekine, Makoto Amanuma, Hitomi Morita, Tomonari Sano, Kazumasa Ishizaka, Takehiro Arai, Kazumasa Arakita, Hideyuki Matsutani, Taskeshi Kondo, Tomoya Takayanagi, Shinichi Takase
Publikováno v:
The international journal of cardiovascular imaging. 32(4)
In conventional coronary computed tomography angiography (CCTA), metal artifacts are frequently observed where stents are located, making it difficult to evaluate in-stent restenosis. This study was conducted to investigate whether subtraction CCTA c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e5ccdcbada5f3c87bdaa66755ebb8145
https://pubmed.ncbi.nlm.nih.gov/26662268
https://pubmed.ncbi.nlm.nih.gov/26662268
Autor:
Tomonari Sano, Shinichi Takase, Takehiro Arai, Tomoya Takayanagi, Takako Sekine, Hitomi Morita, Hideyuki Matsutani, Makoto Amanuma, Kazumasa Ishizaka, Takeshi Kondo
Publikováno v:
Nihon Hoshasen Gijutsu Gakkai zasshi. 71(3)
Purpose The purpose of this study is to validate the clinical usefulness of Advanced Patient Motion Correction (APMC) reconstruction when motion artifacts were observed in a prospective ECG-gated coronary CT angiography (CCTA), which was acquired by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44c58099e9c70e76db6a5ab65b7a22fd
https://pubmed.ncbi.nlm.nih.gov/25797667
https://pubmed.ncbi.nlm.nih.gov/25797667
Autor:
Ryuho Kataoka, Akimasa Ieda, Kazumasa Ishizaka, Mitsunori Ozaki, Yoshizumi Miyoshi, Yusuke Ebihara, Akira Kadokura, Kazuo Shiokawa, Isamu Nagano, Natsuo Sato, Hisao Yamagishi, Satoshi Yagitani
Publikováno v:
Journal of Geophysical Research: Space Physics. 117
[1] A high correlation between a pulsating auroral patch and grouped chorus waves was observed on 17 April 2006 at Syowa Station in Antarctica. The spatial distribution of aurora–chorus correlation coefficients is evaluated in order to determine th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1ba8ff61f7f1b0c983b2ead8633da086
https://doi.org/10.1029/2011ja017478
https://doi.org/10.1029/2011ja017478
Publikováno v:
2011 XXXth URSI General Assembly and Scientific Symposium.
We try to find the observational evidence of the nonlinear evolution of chorus emissions, by examining their wave form data observed by the GEOTAIL spacecraft. Especially we investigate the relationship between the frequency shift and the amplitude v
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::91e5b9bc478515f4ac0efd65fe4f52e4
https://doi.org/10.1109/ursigass.2011.6051155
https://doi.org/10.1109/ursigass.2011.6051155