Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Steffan Puwal"'
Publikováno v:
Journal of Coupled Systems and Multiscale Dynamics. 3:228-232
Publikováno v:
NMR in biomedicine. 30(4)
One goal of magnetic resonance imaging (MRI) is to determine the myelin water fraction in neural tissue. One approach is to measure the reduction in T2* arising from microscopic perturbations in the magnetic field caused by heterogeneities in the mag
Publikováno v:
HFSP Journal. 3:124-129
Computational simulations of the electrodynamics of cardiac fibrillation yield a great deal of useful data and provide a framework for theoretical explanations of heart behavior. Extending the application of these mathematical models to defibrillatio
Publikováno v:
Journal of Biological Physics. 33:145-153
Traditionally, cardiac defibrillation requires a strong electric shock. Many unwanted side effects of this shock could be eliminated if defibrillation were performed using weak stimuli applied to several locations throughout the heart. Such multi-sit
Autor:
Bradley J. Roth, Steffan Puwal
Publikováno v:
Journal of Biological Systems. 14:101-112
Pak et al.1 demonstrated an experimental technique for termination of fibrillation in the heart. Their method used feedback pacing, and resulted in an eight-fold increase in the success rate compared to conventional overdrive pacing. Our goal is to s
Publikováno v:
Mathematical Medicine and Biology: A Journal of the IMA. 22:335-346
Electrical wave-fronts are responsible for contraction in heart tissue. Rotary wave-fronts break up into daughter waves and it is this break up that is believed to underlie ventricular fibrillation. Mathematical methods abound for simulation of fibri
Autor:
David Keyes, Yang Xia, Sebastian C. Peers, Anil Shetty, Tristan Maerz, David Marcantonio, Joseph H. Guettler, Steffan Puwal, Erin A. Baker
OBJECTIVE: To determine if T1ρ magnetic resonance imaging (T1ρ MRI) could assess early articular cartilage changes in knees of asymptomatic female collegiate athletes. It was hypothesized that impact cohort would demonstrate greater changes than no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c318497bad912e7ddb460646762ec17
https://europepmc.org/articles/PMC6425943/
https://europepmc.org/articles/PMC6425943/
Publikováno v:
Medicalbiological engineeringcomputing. 52(5)
Direct detection of neural activity with MRI would be a breakthrough innovation in brain imaging. A Lorentz force method has been proposed to image nerve activity using MRI; a force between the action currents and the static MRI magnetic field causes
Autor:
Steffan Puwal
Publikováno v:
SpringerPlus
Continuum approximations of tissue consider responses averaged over many cells in a region. This simplified approach allows consideration of macroscopic effects, such as deformation or action potential propagation. A bidomain (sometimes known as biph
Publikováno v:
NMR in Biomedicine. 30:e3628
One goal of MRI is to determine the myelin water fraction in neural tissue. One approach is to measure the reduction in T2* arising from microscopic perturbations in the magnetic field caused by heterogeneities in the magnetic susceptibility of myeli