Zobrazeno 1 - 10
of 571
pro vyhledávání: '"Shigeo WADA"'
Autor:
Shigeki Yamada, Tomohiro Otani, Satoshi Ii, Hirotaka Ito, Chifumi Iseki, Motoki Tanikawa, Yoshiyuki Watanabe, Shigeo Wada, Marie Oshima, Mitsuhito Mase
Publikováno v:
Fluids and Barriers of the CNS, Vol 21, Iss 1, Pp 1-15 (2024)
Abstract Background Bidirectional reciprocal motion of cerebrospinal fluid (CSF) was quantified using four-dimensional (4D) flow magnetic resonance imaging (MRI) and intravoxel incoherent motion (IVIM) MRI. To estimate various CSF motions in the enti
Externí odkaz:
https://doaj.org/article/3ee450bb159941d79962a0d3e57c8d79
Publikováno v:
Results in Engineering, Vol 22, Iss , Pp 102304- (2024)
Biomembranes consisting of two opposing phospholipid monolayers, which comprise the so-called lipid bilayer, are largely responsible for the dual solid-fluid behavior of individual cells and viruses. Quantifying the mechanical characteristics of biom
Externí odkaz:
https://doaj.org/article/ba037b08051c4979a229ad5b2a6efcf7
Autor:
Shigeki Yamada, Hirotaka Ito, Hironori Matsumasa, Satoshi Ii, Tomohiro Otani, Motoki Tanikawa, Chifumi Iseki, Yoshiyuki Watanabe, Shigeo Wada, Marie Oshima, Mitsuhito Mase
Publikováno v:
Frontiers in Aging Neuroscience, Vol 16 (2024)
BackgroundDisproportionately enlarged subarachnoid-space hydrocephalus (DESH) is a key feature for Hakim disease (idiopathic normal pressure hydrocephalus: iNPH), but subjectively evaluated. To develop automatic quantitative assessment of DESH with a
Externí odkaz:
https://doaj.org/article/c3a571dfbff1426d8a685cc8c3f0a997
Publikováno v:
Frontiers in Cardiovascular Medicine, Vol 10 (2024)
BackgroundLeft atrial (LA) hemodynamics after lung lobectomies with pulmonary vein (PV) resection is widely understood to be a risk factor for LA thrombosis. A recent magnetic resonance imaging study showed that left upper lobectomy (LUL) with left s
Externí odkaz:
https://doaj.org/article/11e54414571940f8a2e83f434c5fea78
Autor:
Shigeki Yamada, Shinnosuke Hiratsuka, Tomohiro Otani, Satoshi Ii, Shigeo Wada, Marie Oshima, Kazuhiko Nozaki, Yoshiyuki Watanabe
Publikováno v:
Fluids and Barriers of the CNS, Vol 20, Iss 1, Pp 1-12 (2023)
Abstract Background In the cerebrospinal fluid (CSF) dynamics, the pulsations of cerebral arteries and brain is considered the main driving force for the reciprocating bidirectional CSF movements. However, measuring these complex CSF movements on con
Externí odkaz:
https://doaj.org/article/8506c3226dd94994afc39144e045ae23
Autor:
Tomohiro Otani, Nozomi Nishimura, Hiroshi Yamashita, Satoshi Ii, Shigeki Yamada, Yoshiyuki Watanabe, Marie Oshima, Shigeo Wada
Publikováno v:
PLoS Computational Biology, Vol 19, Iss 9, p e1011452 (2023)
The cerebral arterial network covering the brain cortex has multiscale anastomosis structures with sparse intermediate anastomoses (O[102] μm in diameter) and dense pial networks (O[101] μm in diameter). Recent studies indicate that collateral bloo
Externí odkaz:
https://doaj.org/article/3f0f40f3b65b4952955d1f616cbafc12
Autor:
Mohd Azrul Hisham Mohd Adib, Lim Sheh Hong, Mohd Shafie Abdullah, Radhiana Hassan, Azian Abd Aziz, Shigeo Wada
Publikováno v:
Journal of Mechanical Engineering and Sciences, Vol 14, Iss 4, Pp 7609-7621 (2020)
Nowadays, the knowledge of precise blood flow patterns in human blood vessels, especially focusing on Carotid Bifurcations Artery (CBA)area by using computational and modern techniques are very important to develop our understanding regarding to huma
Externí odkaz:
https://doaj.org/article/c5d6f3ff047e42e6a01a8143dd91934c
Autor:
Tomohiro OTANI, Hiroshi YAMASHITA, Kazuma IWATA, Selin Yavuz ILIK, Shigeki YAMADA, Yoshiyuki WATANABE, Shigeo WADA
Publikováno v:
Journal of Biomechanical Science and Engineering, Vol 17, Iss 3, Pp 22-00050-22-00050 (2022)
Phase-contrast magnetic resonance imaging (PC-MRI) allows us to acquire biofluid flow velocity maps, whereas MRI data is restricted by spatiotemporal resolution limitations and contains theoretically inevitable errors. Although various approaches to
Externí odkaz:
https://doaj.org/article/c5dd1ff2fd874d3f8721ecee8af27b36
Publikováno v:
Journal of Biomechanical Science and Engineering, Vol 17, Iss 2, Pp 22-00014-22-00014 (2022)
Although cardiac strain has been used as a practical mechanical indicator to estimate cardiac functions, measurement of strain is still difficult due to the need for operator proficiency and special equipment to perform echocardiography and magnetic
Externí odkaz:
https://doaj.org/article/fa50f35e12644b17b9d030c13bb123e3
Publikováno v:
Frontiers in Physiology, Vol 13 (2022)
The left atrium (LA) functions to transport oxygenated blood from the pulmonary veins (PVs) to the left ventricle (LV). LA hemodynamics has received much attention because thrombosis in the LA in pathological states, such as atrial fibrillation, is a
Externí odkaz:
https://doaj.org/article/0013369b3933451eb1546ea0d723b724