Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Chikako Fujioka"'
Autor:
Yoriaki Matsumoto, Chikako Fujioka, Kazushi Yokomachi, Nobuo Kitera, Eiji Nishimaru, Masao Kiguchi, Toru Higaki, Ikuo Kawashita, Fuminari Tatsugami, Yuko Nakamura, Kazuo Awai
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-12 (2023)
Abstract The main purpose of pre-transcatheter aortic valve implantation (TAVI) cardiac computed tomography (CT) for patients with severe aortic stenosis is aortic annulus measurements. However, motion artifacts present a technical challenge because
Externí odkaz:
https://doaj.org/article/b4a502da270d479cbe5990927b714c8f
Autor:
Toru Higaki, Fuminari Tatsugami, Chikako Fujioka, Hiroaki Sakane, Yuko Nakamura, Yasutaka Baba, Makoto Iida, Kazuo Awai
Publikováno v:
Data in Brief, Vol 13, Iss , Pp 437-443 (2017)
This article describes a quantitative evaluation of visualizing small vessels using several image reconstruction methods in computed tomography. Simulated vessels with diameters of 1–6 mm made by 3D printer was scanned using 320-row detector comput
Externí odkaz:
https://doaj.org/article/669a749f49b34d17a845bc2e2a3cfa31
Autor:
Nobuo Kitera, Chikako Fujioka, Toru Higaki, Eiji Nishimaru, Kazushi Yokomachi, Masao Kiguchi, Kazuo Awai
Publikováno v:
Journal of computer assisted tomography. 46(6)
Using a chest phantom, we compared the image quality of ultra-high-resolution computed tomography (U-HRCT) images acquired in super high-resolution (SHR) and normal resolution (NR) mode and at the routine radiation dose. The detector size was 0.25 an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82f5c3f2451e4191299358a882e13bf5
https://pubmed.ncbi.nlm.nih.gov/35723670
https://pubmed.ncbi.nlm.nih.gov/35723670
Publikováno v:
Japanese Journal of Radiological Technology. 76:740-748
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f970edc9bcbdd21035d63983b684ce1c
https://doi.org/10.6009/jjrt.2020_jjrt_76.7.740
https://doi.org/10.6009/jjrt.2020_jjrt_76.7.740
Autor:
Kazushi Yokomachi, Tomoki Kimura, Chikako Fujioka, Shuichi Ozawa, Kazuo Awai, Yasushi Nagata, Daisuke Kawahara
Publikováno v:
Rep Pract Oncol Radiother
Purpose The objective of this study was to assess synthesized effective atomic number (Z eff ) values with a new developed tissue characteristic phantom and contrast material of varying iodine concentrations using single-source fast kilovoltage switc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::183bbd664e9dda87c0e5eddf6d32dfdc
http://ir.lib.hiroshima-u.ac.jp/00050442
http://ir.lib.hiroshima-u.ac.jp/00050442
Publikováno v:
Polish Journal of Radiology; 2023, Vol. 88 Issue 1, pe270-e274, 5p
Autor:
Zhou Yu, Toru Higaki, Makoto Iida, Kazuo Awai, Toshiro Kitagawa, Yasuki Kihara, Fuminari Tatsugami, Chikako Fujioka, Jian Zhou, Yuko Nakamura, Yujie Lu
Publikováno v:
European Radiology. 29:5322-5329
The purpose of this study was to compare the image quality of coronary computed tomography angiography (CTA) subjected to deep learning–based image restoration (DLR) method with images subjected to hybrid iterative reconstruction (IR). We enrolled
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a1114a91797fa0459b14bffcd88ec1d
https://doi.org/10.1007/s00330-019-06183-y
https://doi.org/10.1007/s00330-019-06183-y
Autor:
Minoru Ishifuro, Masao Kiguchi, Nobuo Kitera, Chikako Fujioka, Kosuke Matsubara, Kazushi Yokomachi, Eiji Nishimaru, Akira Morimoto, Kazuo Awai
Publikováno v:
Nihon Hoshasen Gijutsu Gakkai zasshi. 76(4)
Purpose Organ-based tube current modulation (OB-TCM) techniques, which are provided by three vendors, reduces the radiation dose to the lens of the eyes by decreasing the tube current, when the X-ray tube passes over the anterior surface of critical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::abe58a34b756ddd8bfe35bddb3ce8b73
https://pubmed.ncbi.nlm.nih.gov/32307364
https://pubmed.ncbi.nlm.nih.gov/32307364
Autor:
Chikako Fujioka, Makoto Iida, Hiroaki Sakane, Kazuo Awai, Yuko Nakamura, Yasutaka Baba, Fuminari Tatsugami, Toru Higaki
Publikováno v:
Data in Brief, Vol 13, Iss, Pp 437-443 (2017)
Data in Brief
Data in Brief
This article describes a quantitative evaluation of visualizing small vessels using several image reconstruction methods in computed tomography. Simulated vessels with diameters of 1–6 mm made by 3D printer was scanned using 320-row detector comput
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a36ffa08da8b8f40bbe3bf9ecca4fc3a
https://doi.org/10.1016/j.dib.2017.06.024
https://doi.org/10.1016/j.dib.2017.06.024
Autor:
Kazushi Yokomachi, Yasushi Nagata, Takehiro Shiinoki, Tomoki Kimura, Daisuke Kawahara, Chikako Fujioka, Akito Saito, Shuichi Ozawa, Kazuo Awai, Kentaro Miki, Yuji Murakami, Toru Higaki
Publikováno v:
Physical and engineering sciences in medicine. 43(2)
The aim of our study is to evaluate the metal artefact reduction techniques with the same contrast scale for different vendors’ dual-energy CT (DECT): kV-CT image with metal artefact reduction method and monoenergetic CT image using Canon’s DECT,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77a16131e3959c04699dfdf785a91c6b
https://pubmed.ncbi.nlm.nih.gov/32524438
https://pubmed.ncbi.nlm.nih.gov/32524438