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Deconvolution of impulse response in eventrelated BOLD fMRI

by Gary H. Glover - NEUROIMAGE , 1999
"... The temporal characteristics of the BOLD response in sensorimotor and auditory cortices were measured in subjects performing finger tapping while listening to metronome pacing tones. A repeated trial paradigm was used with stimulus durations of 167 ms to 16 s and intertrial times of 30 s. Both corti ..."
Abstract - Cited by 205 (2 self) - Add to MetaCart
. The deconvolution filter must be measured for each subject using a shortstimulus paradigm. It is concluded that deconvolution may be effective in diminishing the hemodynamically imposed temporal blurring and may have potential applications in quantitating responses in eventrelated fMRI.

Comparing hemodynamic models with DCM

by Klaas Enno Stephan, Nikolaus Weiskopf, Peter M. Drysdale, Peter A. Robinson, Karl J. Friston A - NeuroImage , 2007
"... The classical model of blood oxygen level-dependent (BOLD) responses by Buxton et al. [Buxton, R.B., Wong, E.C., Frank, L.R., 1998. Dynamics of blood flow and oxygenation changes during brain activation: the Balloon model. Magn. Reson. Med. 39, 855–864] has been very important in providing a biophys ..."
Abstract - Cited by 33 (3 self) - Add to MetaCart
biophysically plausible framework for explaining different aspects of hemodynamic responses. It also plays an important role in the hemodynamic forward model for dynamic causal modeling (DCM) of fMRI data. A recent study by Obata et al. [Obata, T., Liu, T.T., Miller, K.L., Luh, W.M., Wong, E.C., Frank, L

Modelling, analysis and calculation of cerebral hemodynamics

by Silvia Daun, Thorsten Tjardes , 2007
"... Mathematical models of cerebral hemodynamics, applicable to humans and rats have been developed and analysed with the purpose of reaching a deeper insight to which degree experimental results on rats can be extrapolated to humans and to clinical management of patients. These models include regulatio ..."
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Mathematical models of cerebral hemodynamics, applicable to humans and rats have been developed and analysed with the purpose of reaching a deeper insight to which degree experimental results on rats can be extrapolated to humans and to clinical management of patients. These models include

PARAMETER ESTIMATES FOR THE RELAXED DIMENSIONAL FACTORIZATION PRECONDITIONER AND APPLICATION TO HEMODYNAMICS∗

by Michele Benzi, Simone Deparis, Gwenol Gr, Alfio Quarteroni, Michele Benzi, Simone Deparis, Gwenol Grandperrin, Alfio
"... Abstract. We present new results on the Relaxed Dimensional Factorization (RDF) precondi-tioner for solving saddle point problems, first introduced in [5]. This method contains a parameter α> 0, to be chosen by the user. Previous works provided an estimate of α in the 2D case using Local Fourier ..."
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–Stokes equations, hemodynamics applications, dimensional splitting preconditioner,

Applications of variational data assimilation in computational hemodynamics

by Lucia Mirabella, Tizaino Passerini, Mauro Perego, Marina Piccinelli, Christian Vergara, Ro Veneziani, Christian Vergara, Ro Veneziani, T. Passerini, M. Piccinelli, A. Veneziani, L. Mirabella, M. Perego, C. Vergara , 2011
"... Abstract The development of new technologies for acquiring measures and images in order to investigate cardiovascular diseases raises new challenges in scientific computing. These data can be in fact merged with the numerical simulations for improving the accuracy and reliability of the computationa ..."
Abstract - Cited by 8 (3 self) - Add to MetaCart
of the computational tools. Assimilation of measured data and numerical models is well established in meteorology, whilst it is relatively new in computational hemodynamics. Different approaches are possible for the mathematical setting of this problem. Among them, we follow here a variational formulation, based

Review Functional hemodynamic monitoring

by Michael R Pinsky, Didier Payen , 2005
"... Hemodynamic monitoring is a central component of intensive care. Patterns of hemodynamic variables often suggest cardiogenic, hypovolemic, obstructive, or distributive (septic) etiologies to cardiovascular insufficiency, thus defining the specific treatments required. Monitoring increases in invasiv ..."
Abstract - Cited by 5 (0 self) - Add to MetaCart
meanings. Functional hemodynamic monitoring implies a therapeutic application, independent of diagnosis such as a therapeutic trial of fluid challenge to assess preload responsiveness. Newer methods for assessing preload responsiveness include monitoring changes in central venous pressure during

Modeling Fluid Flows in Distensible Tubes for Applications in Hemodynamics

by X. Descovich, G. Pontrelli, S. Melchionna, S. Succi, S. Wassertheurer, Istituto Processi Chimico-fisici - International Journal of Modern Physics C
"... We present a lattice Boltzmann (LB) model for the simulation of hemodynamic °ows in the presence of compliant walls. The new scheme is based on the use of a continuous bounce-back boundary condition, as combined with a dynamic constitutive relation between the °ow pres-sure at the wall and the resul ..."
Abstract - Cited by 4 (0 self) - Add to MetaCart
We present a lattice Boltzmann (LB) model for the simulation of hemodynamic °ows in the presence of compliant walls. The new scheme is based on the use of a continuous bounce-back boundary condition, as combined with a dynamic constitutive relation between the °ow pres-sure at the wall

Hemodynamic Models: Investigation and Application to Brain Imaging Analysis

by École Doctorale Polytechnique, Thomas Deneux, Advisor Olivier Faugeras, M. John Mayhew Reviewer, M. Nikos Paragios Reviewer, M. Gilles Dowek, M. Olivier Faugeras , 2010
"... I would like to thank the many people who helped be during my PhD work, through discussions, collaborations, encouragements... Approximately in the order I met them: Olivier Faugeras, who accompanied me throughout this thesis- I am particularly grateful to his energy and enthusiasm that were very he ..."
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I would like to thank the many people who helped be during my PhD work, through discussions, collaborations, encouragements... Approximately in the order I met them: Olivier Faugeras, who accompanied me throughout this thesis- I am particularly grateful to his energy and enthusiasm that were very helpful to lead all these projects and collaborations, and encourage me at difficult times, Renaud Keriven, Miklos Santha and Jacques Stern for their help in the first choices at the time of my Master, Jean-Baptiste Poline, Line Garnero, Sylvain Baillet, Anne-Lise Paradis who helped me to learn something about brain imaging, Lars-Kai Hansen gave me a great confidence by inviting me in Copenhaguen, and Daniel Jacobsen was a nice companion during this first collaboration, Lars Hanson, Torben Lund, and everybody at the Hvidøvre Hospital in Copenhaguen, in particular for offering me an fMRI acquisition, Many thanks to Ivo Vanzetta for sharing his monkey with me, and for the nice and fruitful collaboration we had,

Hemodynamic Characteristics of Arteriovenous Fistula in Renal

by Nephrol Dial, Ryohei Kuwatsuru, Nao Kikuchi, Ryohei Kuwatsuru, Shinsuke Kyogoku, Akihiko Shiraishi, Shingo Okada, Daisuke Tsuge, Yuki Yamashiro, Aneurysm Angiomyolipoma, Embolization Kidney Rupture
"... www.karger.com/cnd This is an Open Access article licensed under the terms of the Creative Commons Attribution-NonCommercial 3.0 Unported license (CC BY-NC) (www.karger.com/OA-license), applicable to the online version of the article only. Distribution permitted for non-commercial purposes only. ..."
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www.karger.com/cnd This is an Open Access article licensed under the terms of the Creative Commons Attribution-NonCommercial 3.0 Unported license (CC BY-NC) (www.karger.com/OA-license), applicable to the online version of the article only. Distribution permitted for non-commercial purposes only.

The Acute Hemodynamic Effects of Diazoxide in Man

by R. Wlson, Ronald Okun
"... IN THE past 10 years many new drugs that lower blood pressure have been introduced for the treatment of hypertension. Several of them have not withstood the rigors of con-trolled clinical trials; others have faded away because side effects precluded their successful application. The useful hypotensi ..."
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IN THE past 10 years many new drugs that lower blood pressure have been introduced for the treatment of hypertension. Several of them have not withstood the rigors of con-trolled clinical trials; others have faded away because side effects precluded their successful application. The useful
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