Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Yoshihiro Nakaya"'
Autor:
Keisuke Takiguchi, Atsushi Urikura, Tsukasa Yoshida, Yoshihiro Nakaya, Masahiro Endo, Takeshi Aramaki
Publikováno v:
Diagnostic and Interventional Radiology, Vol 26, Iss 4, Pp 333-338 (2020)
PURPOSEThe present study aimed to evaluate the scan technique of computed tomography (CT)-guided puncture procedures using partial exposure mode (PEM) on the radiation dose of the operator’s hand and image quality.METHODSRadiation dose was evaluate
Externí odkaz:
https://doaj.org/article/327f10791c984d01ac923e50e1171b9f
Autor:
Sayaka Ide, Takeshi Aramaki, Atsushi Urikura, Tsukasa Yoshida, Yoshihiro Nakaya, Masahiro Endo
Publikováno v:
Journal of Computer Assisted Tomography. 46:29-33
OBJECTIVE The aim of the study was to compare computed tomography (CT) angiography (CTA) imaging of deep inferior epigastric artery perforator (DIEP) using the ultrahigh-resolution CT (UHRCT) and conventional multidetector CT (MDCT). METHODS This ret
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-9 (2024)
Abstract The Pine Island and Thwaites Ice Shelves (PIIS/TIS) in the Amundsen Sea are melting rapidly and impacting global sea levels. The thermocline depth (TD) variability, the interface between cold Winter Water and warm modified Circumpolar Deep W
Externí odkaz:
https://doaj.org/article/81edafb5d9d24726b43cba7da354062f
Autor:
Yoshihiro Nakaya, Kensei Shirata, Tsukasa Yoshida, Masahiro Endo, Atsushi Urikura, Yoichiro Hosokawa
Publikováno v:
Radiological physics and technology. 14(2)
We investigated the measurement error and repeatability of the apparent diffusion coefficient (ADC) obtained using thin-slice imaging. Diffusion-weighted images of an ice-water phantom were acquired using 1.5-T and 3.0-T scanners with 1-, 3-, and 5-m
Autor:
Tsukasa Yoshida, Yoshihiro Nakaya, Atsushi Urikura, Takeshi Aramaki, Masahiro Endo, Keisuke Takiguchi
Publikováno v:
Diagn Interv Radiol
PURPOSE: The present study aimed to evaluate the scan technique of computed tomography (CT)-guided puncture procedures using partial exposure mode (PEM) on the radiation dose of the operator’s hand and image quality. METHODS: Radiation dose was eva
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3947548373819f90d9b77b67d8d9a060
https://europepmc.org/articles/PMC7360079/
https://europepmc.org/articles/PMC7360079/
Autor:
Eiji Nishimaru, Tsukasa Yoshida, Yoshihiro Nakaya, Takanori Hara, Masahiro Endo, Atsushi Urikura
Publikováno v:
Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB). 81
Purpose This study aimed to assess the noise characteristics of ultra-high-resolution computed tomography (UHRCT) with deep learning-based reconstruction (DLR). Methods Two different diameters of water phantom were scanned with three different resolu
Publikováno v:
Academic Radiology. 24:1380-1386
We aimed to compare the contrast enhancement between tumor and mammary-gland tissue to distinguish lesions in the super-early phase, during which minimal contrast media uptake is observed in mammary-gland tissue.Dynamic magnetic resonance imaging, in
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 3, Pp n/a-n/a (2024)
Abstract Melting of ice shelves can energize a wide range of ocean currents, from three‐dimensional turbulence to relatively large‐scale boundary currents. Here, we conduct high‐resolution simulations of the western Amundsen Sea to show that su
Externí odkaz:
https://doaj.org/article/62970542799e460fa36d406f84467930
Autor:
Daisuke Hirano, Takeshi Tamura, Kazuya Kusahara, Masakazu Fujii, Kaihe Yamazaki, Yoshihiro Nakayama, Kazuya Ono, Takuya Itaki, Yuichi Aoyama, Daisuke Simizu, Kohei Mizobata, Kay I. Ohshima, Yoshifumi Nogi, Stephen R. Rintoul, Esmee van Wijk, Jamin S. Greenbaum, Donald D. Blankenship, Koji Saito, Shigeru Aoki
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-15 (2023)
Abstract The Totten Glacier in East Antarctica, with an ice volume equivalent to >3.5 m of global sea-level rise, is grounded below sea level and, therefore, vulnerable to ocean forcing. Here, we use bathymetric and oceanographic observations from pr
Externí odkaz:
https://doaj.org/article/c79ba67253354d47a0ff9cc2ae3fa015
Autor:
Atsushi Urikura, Yoshihiro Nakaya, Takanori Hara, Tsukasa Yoshida, Masahiro Endo, Takashi Hoshino, Eiji Nishimaru
Publikováno v:
Journal of Applied Clinical Medical Physics
Purpose We propose a novel method to assess overbeaming and overranging, as well as the effect of reducing longitudinal exposure range, by using a dynamic z‐collimator in area detector computed tomography. Methods and materials A 500‐mm diameter