Zobrazeno 1 - 10 of 24 pro vyhledávání: '"Valerie E M Griffeth"'
1
ATS Core Curriculum 2020. Adult Critical Care Medicine
Autor: Alice Gallo De Moraes, Steven D. Pearson, K. S. Wolfe, Margaret M. Hayes, Cameron Baston, Jakob I. McSparron, Amjad Kanj, Bishoy Zakhary, Dylan Lovin, Valerie E. M. Griffeth, Başak Çoruh, Mary Elizabeth Card, Matthew Leveno, R. Scott Stephens, Megan Acho, Stephanie I. Maximous, Geoffrey D. Bass, Susan Pasnick
Publikováno v: ATS Scholar
The American Thoracic Society Core Curriculum updates clinicians annually in adult and pediatric pulmonary disease, medical critical care, and sleep medicine, in a 3- to 4-year recurring cycle of topics. These topics will be presented at the 2020 Int
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c14719989490987d7d687a32a0ddad3d
https://doi.org/10.34197/ats-scholar.2020-0015re
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3
Akademický článek
Variability of the coupling of blood flow and oxygen metabolism responses in the brain: a problem for interpreting BOLD studies but potentially a new window on the underlying neural activity
Autor: Richard B Buxton, Valerie E. M. Griffeth, Aaron B. Simon, Farshad eMoradi
Publikováno v: Frontiers in Neuroscience, Vol 8 (2014)
Recent studies from our group and others using quantitative fMRI methods have found that variations of the coupling ratio of blood flow (CBF) and oxygen metabolism (CMRO2) responses to a stimulus have a strong effect on the BOLD response. Across a nu
Externí odkaz: https://doaj.org/article/d574e239ae90446cb9061786e8da2a92
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5
Akademický článek
A novel method of combining blood oxygenation and blood flow sensitive magnetic resonance imaging techniques to measure the cerebral blood flow and oxygen metabolism responses to an unknown neural stimulus.
Autor: Aaron B Simon, Valerie E M Griffeth, Eric C Wong, Richard B Buxton
Publikováno v: PLoS ONE, Vol 8, Iss 1, p e54816 (2013)
Simultaneous implementation of magnetic resonance imaging methods for Arterial Spin Labeling (ASL) and Blood Oxygenation Level Dependent (BOLD) imaging makes it possible to quantitatively measure the changes in cerebral blood flow (CBF) and cerebral
Externí odkaz: https://doaj.org/article/4fa45635d808435da358e33d9b6c5420
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6
Akademický článek
A New Functional MRI Approach for Investigating Modulations of Brain Oxygen Metabolism.
Autor: Valerie E M Griffeth, Nicholas P Blockley, Aaron B Simon, Richard B Buxton
Publikováno v: PLoS ONE, Vol 8, Iss 6, p e68122 (2013)
Functional MRI (fMRI) using the blood oxygenation level dependent (BOLD) signal is a common technique in the study of brain function. The BOLD signal is sensitive to the complex interaction of physiological changes including cerebral blood flow (CBF)
Externí odkaz: https://doaj.org/article/fb08b98f854a452c8c7c4c9e29ab0987
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7
A review of calibrated blood oxygenation level-dependent (BOLD) methods for the measurement of task-induced changes in brain oxygen metabolism
Autor: Valerie E. M. Griffeth, Nicholas P. Blockley, Aaron B. Simon, Richard B. Buxton
Publikováno v: NMR in Biomedicine. 26:987-1003
The dynamics of the blood oxygenation level-dependent (BOLD) response are dependent on changes in cerebral blood flow, cerebral blood volume and the cerebral metabolic rate of oxygen consumption. Furthermore, the amplitude of the response is dependen
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e426350ac7351309128d72a535b185cd
https://doi.org/10.1002/nbm.2847
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8
A theoretical framework for estimating cerebral oxygen metabolism changes using the calibrated-BOLD method: Modeling the effects of blood volume distribution, hematocrit, oxygen extraction fraction, and tissue signal properties on the BOLD signal
Autor: Richard B. Buxton, Valerie E. M. Griffeth
Publikováno v: NeuroImage. 58:198-212
Calibrated blood oxygenation level dependent (BOLD) imaging, a technique used to measure changes in cerebral O(2) metabolism, depends on an accurate model of how the BOLD signal is affected by the mismatch between changes in cerebral blood flow (CBF)
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::59a25bb1b435c8ebead9e500a5930ea2
https://doi.org/10.1016/j.neuroimage.2011.05.077
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9
Sources of systematic error in calibrated BOLD based mapping of baseline oxygen extraction fraction
Autor: Nicholas P, Blockley, Valerie E M, Griffeth, Alan J, Stone, Hannah V, Hare, Daniel P, Bulte
Publikováno v: NeuroImage. 122
Recently a new class of calibrated blood oxygen level dependent (BOLD) functional magnetic resonance imaging (MRI) methods were introduced to quantitatively measure the baseline oxygen extraction fraction (OEF). These methods rely on two respiratory
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::1f5e57a1d0a840aaca62a11a54e49f2a
https://pubmed.ncbi.nlm.nih.gov/26254114
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10
Calibrating the BOLD response without administering gases: comparison of hypercapnia calibration with calibration using an asymmetric spin echo
Autor: Aaron B. Simon, David J. Dubowitz, Valerie E. M. Griffeth, Richard B. Buxton, Nicholas P. Blockley
Publikováno v: NeuroImage. 104
The calibrated BOLD (blood oxygen level dependent) technique was developed to quantify the BOLD signal in terms of changes in oxygen metabolism. In order to achieve this a calibration experiment must be performed, which typically requires a hypercapn
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba66d4c30d295e185551e978508e0257
https://pubmed.ncbi.nlm.nih.gov/25451475
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