Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Bharat B. Tripathi"'
Publikováno v:
Brain Multiphysics, Vol 2, Iss , Pp 100033- (2021)
Shear shocks, which exist in a completely different regime from compressional shocks, were recently observed in the brain. These low phase speed (≈ 2 m/s) high Mach number (≈ 1) waves could be the primary mechanism behind diffuse axonal injury du
Externí odkaz:
https://doaj.org/article/d46bc2ad068e43c4bbe7db1536e1645d
Modeling and simulations of two dimensional propagation of shear shock waves in relaxing soft solids
Publikováno v:
Journal of Computational Physics. 395:205-222
Soft solids, such as gelatin or soft tissue, have a shear wave speed that is smaller than the compressional wave speed. Recent observations of shear shock wave generation in the brain, which can easily reach a large Mach number regime, suggest that t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::976a5fc6bf61a926f88a82b3f0efbd24
https://doi.org/10.1016/j.jcp.2019.06.014
https://doi.org/10.1016/j.jcp.2019.06.014
Publikováno v:
Brain Multiphysics, Vol 2, Iss, Pp 100033-(2021)
Shear shocks, which exist in a completely different regime from compressional shocks, were recently observed in the brain. These low phase speed ( ≈ 2 m/s) high Mach number ( ≈ 1) waves could be the primary mechanism behind diffuse axonal injury
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b03302e1b3c0e3f9101a3c2584395c77
http://arxiv.org/abs/2010.03456
http://arxiv.org/abs/2010.03456
Traumatic brain injury (TBI) studies on the living human brain are experimentally infeasible due to ethical reasons and the elastic properties of the brain degrade rapidly postmortem. We present a simulation approach that models ultrasound propagatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fe3b1026fd29dc531a2d8b06c25c8a7b
http://arxiv.org/abs/2003.06446
http://arxiv.org/abs/2003.06446
Autor:
Sandhya Chandrasekaran, Francisco Santibanez, Bharat B. Tripathi, Ryan DeRuiter, Ruth Vorder Bruegge, Gianmarco Pinton
Publikováno v:
Journal of Biomechanics. 134:110913
Direct measurement of brain motion at high spatio-temporal resolutions during impacts has been a persistent challenge in brain biomechanics. Using high frame-rate ultrasound and high sensitivity motion tracking, we recently showed shear waves sent to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bab7dbdee983cafa7d4605364c29b47b
https://doi.org/10.1016/j.jbiomech.2021.110913
https://doi.org/10.1016/j.jbiomech.2021.110913
Publikováno v:
Shock Waves. 27:879-888
The recent discovery of shear shock wave generation and propagation in the porcine brain suggests that this new shock phenomenology may be responsible for a broad range of traumatic injuries. Blast-induced head movement can indirectly lead to shear w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a59f5353cb3d8a1e685a5b089813ee93
https://doi.org/10.1007/s00193-017-0734-8
https://doi.org/10.1007/s00193-017-0734-8
Publikováno v:
2018 IEEE International Ultrasonics Symposium (IUS).
Highly realistic finite difference simulations of acoustical wave propagation can be used to describe ultrasound imaging in soft tissue. They have recently been shown to also model the backscattering physics from the subresolution motion of distribut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::25110a6d033a232c3a7a8645d43e45be
https://doi.org/10.1109/ultsym.2018.8579708
https://doi.org/10.1109/ultsym.2018.8579708
Publikováno v:
2018 IEEE International Ultrasonics Symposium (IUS).
Attenuation in soft solids are governed by power laws with non-integral exponents. Attenuation is a critical component for correctly modeling the wave propagation physics. For nonlinear waves, in particular nonlinear shear waves, it important to mode
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d46c32ed286f6f8d0769b311b8f6f234
https://doi.org/10.1109/ultsym.2018.8579880
https://doi.org/10.1109/ultsym.2018.8579880
Publikováno v:
2018 IEEE International Ultrasonics Symposium (IUS).
We have recently observed that smooth low acceleration shear waves develop into destructive high acceleration shear shocks as they propagate in fresh ex vivo porcine brain. We hypothesize that local amplification of acceleration at the shock front ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::900d5a239660ccb481d61cee3ea67856
https://doi.org/10.1109/ultsym.2018.8579968
https://doi.org/10.1109/ultsym.2018.8579968
Publikováno v:
Journal of Computational Physics
Journal of Computational Physics, Elsevier, 2018, 366, pp.298-319. ⟨10.1016/j.jcp.2018.04.010⟩
Journal of Computational Physics, Elsevier, 2018, 366, pp.298-319. ⟨10.1016/j.jcp.2018.04.010⟩
This work aims at developing a high-order numerical method for the propagation of acoustic shock waves using the discontinuous Galerkin method. High order methods tend to amplify the formation of spurious oscillations (Gibbs phenomenon) around the di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::742727a9be77da616bfb04606feb41fa
https://hal.sorbonne-universite.fr/hal-01784203/document
https://hal.sorbonne-universite.fr/hal-01784203/document