Zobrazeno 1 - 10
of 553
pro vyhledávání: '"Tadashi Yamaguchi"'
Autor:
Eiji Shikata, Izumi Yamaguchi, Masaaki Korai, Takeshi Miyamoto, Tadashi Yamaguchi, Hiroshi Kagusa, Kenji Shimada, Yoshiteru Tada, Keiko T. Kitazato, Yasuhisa Kanematsu, Yasushi Takagi
Publikováno v:
Brain Hemorrhages, Vol 5, Iss 2, Pp 91-97 (2024)
An aneurysmal subarachnoid hemorrhage (aSAH) is a devastating event associated with a high mortality and morbidity rate. Though numerous medications are used to prevent cerebral vasospasm and vasospasm-related cerebral infarction after aSAH, no effec
Externí odkaz:
https://doaj.org/article/bb6cdbe9a01d4c4aabc7ce975c63b4a0
Autor:
Jungtaek Choi, Jeffrey A. Ketterling, Jonathan Mamou, Cameron Hoerig, Shinnosuke Hirata, Kenji Yoshida, Tadashi Yamaguchi
Publikováno v:
Sensors, Vol 24, Iss 22, p 7118 (2024)
The objective of this work is to address the need for versatile and effective tissue characterization in abdominal ultrasound diagnosis using a simpler system. We evaluated the backscattering coefficient (BSC) of several tissue-mimicking phantoms uti
Externí odkaz:
https://doaj.org/article/c27f736564e74f34bcf34f72a2fb3f7e
Autor:
Shinnosuke Hirata, Akiho Isshiki, Dar-In Tai, Po-Hsiang Tsui, Kenji Yoshida, Tadashi Yamaguchi
Publikováno v:
Frontiers in Physics, Vol 11 (2023)
Introduction: Assessing the stage of liver fibrosis during the diagnosis and follow-up of patients with diffuse liver disease is crucial. The tissue structure in the fibrotic liver is reflected in the texture and contrast of an ultrasound image, with
Externí odkaz:
https://doaj.org/article/216f57d1730f4538967a1e4707a4dd2c
Autor:
Eiji Shikata, Takeshi Miyamoto, Tadashi Yamaguchi, Izumi Yamaguchi, Hiroshi Kagusa, Daiki Gotoh, Kenji Shimada, Yoshiteru Tada, Kenji Yagi, Keiko T. Kitazato, Yasuhisa Kanematsu, Yasushi Takagi
Publikováno v:
Journal of Neuroinflammation, Vol 19, Iss 1, Pp 1-11 (2022)
Abstract Background and purpose An aneurysmal subarachnoid hemorrhage is a devastating event. To establish an effective therapeutic strategy, its pathogenesis must be clarified, particularly the pathophysiology of brain harboring intracranial aneurys
Externí odkaz:
https://doaj.org/article/04c858442b4b444f8d8542aa6bccf344
Publikováno v:
Frontiers in Medicine, Vol 9 (2022)
Portal hypertension is a major pathophysiological condition in patients with cirrhosis. This accounts for the occurrence and severity of the various manifestations. The degree is determined by the portal pressure or hepatic venous pressure gradients,
Externí odkaz:
https://doaj.org/article/62a3e36938d54ed3ab4432a11aeb598a
Autor:
Hsien-Jung Chan, Zhuhuang Zhou, Jui Fang, Dar-In Tai, Jeng-Hwei Tseng, Ming-Wei Lai, Bao-Yu Hsieh, Tadashi Yamaguchi, Po-Hsiang Tsui
Publikováno v:
IEEE Journal of Translational Engineering in Health and Medicine, Vol 9, Pp 1-12 (2021)
Objective: Hepatic steatosis causes nonalcoholic fatty liver disease and may progress to fibrosis. Ultrasound is the first-line approach to examining hepatic steatosis. Fatty droplets in the liver parenchyma alter ultrasound radiofrequency (RF) signa
Externí odkaz:
https://doaj.org/article/4c3e490f3e9a4004a743bbebc0b6ef95
Autor:
Masaaki Omura, Kunimasa Yagi, Ryo Nagaoka, Kenji Yoshida, Tadashi Yamaguchi, Hideyuki Hasegawa
Publikováno v:
Sensors, Vol 23, Iss 5, p 2639 (2023)
High-frame-rate imaging with a clutter filter can clearly visualize blood flow signals and provide more efficient discrimination with tissue signals. In vitro studies using clutter-less phantom and high-frequency ultrasound suggested a possibility of
Externí odkaz:
https://doaj.org/article/f0acb5621287419eb811ee239e92fd6e
Autor:
Hitoshi Maruyama, Kazufumi Kobayashi, Soichiro Kiyono, Tetsuhiro Chiba, Naoya Kato, Masayuki Ohtsuka, Kazuyo Ito, Tadashi Yamaguchi, Shuichiro Shiina
Publikováno v:
European Radiology Experimental, Vol 4, Iss 1, Pp 1-10 (2020)
Abstract Background To examine in vitro acoustic property of nonalcoholic fatty disease in mouse and human liver to identify nonalcoholic steatohepatitis (NASH). Methods The acoustic impedance (× 106 kg/m2/s) was measured in 35 free fatty acids (FFA
Externí odkaz:
https://doaj.org/article/3b8b3ed858e240d5906d6c9e2eec388b
Autor:
Izumi Yamaguchi, Yasuhisa Kanematsu, Kenji Shimada, Masaaki Korai, Takeshi Miyamoto, Eiji Shikata, Tadashi Yamaguchi, Nobuaki Yamamoto, Yuki Yamamoto, Keiko T. Kitazato, Yoshihiro Okayama, Yasushi Takagi
Publikováno v:
Cerebrovascular Diseases Extra, Vol 9, Iss 3, Pp 129-138 (2019)
Background and Purpose: Little attention has been paid to the pathogenesis of in-hospital stroke, despite poor outcomes and a longer time from stroke onset to treatment. We studied the pathophysiology and biomarkers for detecting patients who progres
Externí odkaz:
https://doaj.org/article/535e98993355439b8cc7ec02b7ea7aa7
Publikováno v:
Japanese Journal of Stroke. 45:63-69
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf620cbd03b90bf1ee5486182134cfa3
https://doi.org/10.3995/jstroke.11043
https://doi.org/10.3995/jstroke.11043