Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Ruth J Okamoto"'
Publikováno v:
Neuroscience Insights, Vol 13 (2019)
Measurements of dynamic deformation of the human brain, induced by external harmonic vibration of the skull, were analyzed to illuminate the mechanics of mild traumatic brain injury (TBI). Shear wave propagation velocity vector fields were obtained t
Externí odkaz:
https://doaj.org/article/709728264de945ba9a74f8cd9fff0e09
Autor:
Shuaihu Wang, Kevin N. Eckstein, Charlotte A. Guertler, Curtis L. Johnson, Ruth J. Okamoto, Matthew D.J. McGarry, Philip V. Bayly
Publikováno v:
Brain Multiphysics, Vol 6, Iss , Pp 100091- (2024)
Knowledge of the mechanical properties of brain tissue in vivo is essential to understanding the mechanisms underlying traumatic brain injury (TBI) and to creating accurate computational models of TBI and neurosurgical simulation. Brain white matter,
Externí odkaz:
https://doaj.org/article/45bb8fa512ee414ea4be5493602c089a
Publikováno v:
PLoS ONE, Vol 6, Iss 7, p e22063 (2011)
Non-destructive measurement of acceleration-induced displacement fields within a closed object is a fundamental challenge. Inferences of how the brain deforms following skull impact have thus relied largely on indirect estimates and course-resolution
Externí odkaz:
https://doaj.org/article/f52decf58a754fde98a288b02a86746e
Autor:
Daniel R. Smith, Diego A. Caban-Rivera, Matthew D.J. McGarry, L. Tyler Williams, Grace McIlvain, Ruth J. Okamoto, Elijah E.W. Van Houten, Philip V. Bayly, Keith D. Paulsen, Curtis L. Johnson
Publikováno v:
Brain Multiphysics, Vol 3, Iss , Pp 100051- (2022)
Magnetic resonance elastography (MRE) is an MRI technique for imaging the mechanical properties of brain in vivo, and has shown differences in properties between neuroanatomical regions and sensitivity to aging, neurological disorders, and normal bra
Externí odkaz:
https://doaj.org/article/20ad6c90571a4ea299d8f39c1344fdb7
Autor:
Ruth J. Okamoto, Andrew K. Knutsen, K.T. Ramesh, Aaron Carass, Philip V. Bayly, Curtis L. Johnson, Ahmed Alshareef, Kshitiz Upadhyay, John A. Butman, Jerry L. Prince, Dzung L. Pham
Publikováno v:
Annals of Biomedical Engineering. 49:2677-2692
Computational models of the brain and its biomechanical response to skull accelerations are important tools for understanding and predicting traumatic brain injuries (TBIs). However, most models have been developed using experimental data collected o
Publikováno v:
2021 Design of Medical Devices Conference.
It is important to understand mechanical anisotropy in fibrous soft tissues because of the relationship of anisotropy to tissue function, and because anisotropy may change due to injury and disease. We have developed a method to noninvasively investi
Publikováno v:
J Acoust Soc Am
An analytical and numerical investigation of shear wave behavior in nearly-incompressible soft materials with two fiber families was performed, focusing on the effects of material parameters and imposed pre-deformations on wave speed. This theoretica
Autor:
Elijah E. W. Van Houten, Matthew D. J. McGarry, Keith D. Paulsen, Ruth J. Okamoto, Philip V. Bayly, Damian Sowinski, John B. Weaver, Daniel R. Smith, Charlotte A. Guertler, Curtis L. Johnson
Publikováno v:
Phys Med Biol
In this study, we describe numerical implementation of a heterogenous, nearly incompressible, transverse isotropic (NITI) finite element (FE) model with key advantages for use in MR elastography of fibrous soft tissue. MR elastography (MRE) estimates
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d501d564c6df46076377800ec3e08ac
https://europepmc.org/articles/PMC9029972/
https://europepmc.org/articles/PMC9029972/
Publikováno v:
J Biomech
Natural modes and frequencies of three-dimensional (3D) deformation of the human brain were identified from in vivo tagged magnetic resonance images (MRI) acquired dynamically during transient mild acceleration of the head. Twenty 3D strain fields, e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1794b8190c44ff119517c2899d4c880d
https://europepmc.org/articles/PMC8055167/
https://europepmc.org/articles/PMC8055167/
Autor:
Curtis L. Johnson, Ruth J. Okamoto, Daniel R. Smith, Charlotte A. Guertler, Philip V. Bayly, Anthony J. Romano
Publikováno v:
J Biomech Eng
Magnetic resonance elastography (MRE) has emerged as a sensitive imaging technique capable of providing a quantitative understanding of neural microstructural integrity. However, a reliable method for the quantification of the anisotropic mechanical