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Valerie E.M. Griffeth
Valerie E.M. Griffeth
Physician, Advocate Medical Group
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A theoretical framework for estimating cerebral oxygen metabolism changes using the calibrated-BOLD method: modeling the effects of blood volume distribution, hematocrit …
VEM Griffeth, RB Buxton
Neuroimage 58 (1), 198-212, 2011
1922011
A review of calibrated blood oxygenation level‐dependent (BOLD) methods for the measurement of task‐induced changes in brain oxygen metabolism
NP Blockley, VEM Griffeth, AB Simon, RB Buxton
NMR in Biomedicine 26 (8), 987-1003, 2013
1842013
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 …
RB Buxton, VEM Griffeth, AB Simon, F Moradi
Frontiers in neuroscience 8, 139, 2014
932014
Prospects for quantitative fMRI: investigating the effects of caffeine on baseline oxygen metabolism and the response to a visual stimulus in humans
VEM Griffeth, JE Perthen, RB Buxton
Neuroimage 57 (3), 809-816, 2011
902011
A general analysis of calibrated BOLD methodology for measuring CMRO2 responses: comparison of a new approach with existing methods
NP Blockley, VEM Griffeth, RB Buxton
Neuroimage 60 (1), 279-289, 2012
752012
Calibrating the BOLD response without administering gases: comparison of hypercapnia calibration with calibration using an asymmetric spin echo
NP Blockley, VEM Griffeth, AB Simon, DJ Dubowitz, RB Buxton
Neuroimage 104, 423-429, 2015
542015
An analysis of the use of hyperoxia for measuring venous cerebral blood volume: comparison of the existing method with a new analysis approach
NP Blockley, VEM Griffeth, MA Germuska, DP Bulte, RB Buxton
Neuroimage 72, 33-40, 2013
522013
Measurement of oxygen extraction fraction (OEF): An optimized BOLD signal model for use with hypercapnic and hyperoxic calibration
A Merola, K Murphy, AJ Stone, MA Germuska, VEM Griffeth, NP Blockley, ...
Neuroimage 129, 159-174, 2016
422016
Sources of systematic error in calibrated BOLD based mapping of baseline oxygen extraction fraction
NP Blockley, VEM Griffeth, AJ Stone, HV Hare, DP Bulte
Neuroimage 122, 105-113, 2015
382015
A new functional MRI approach for investigating modulations of brain oxygen metabolism
VEM Griffeth, NP Blockley, AB Simon, RB Buxton
PLoS One 8 (6), e68122, 2013
332013
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 …
AB Simon, VEM Griffeth, EC Wong, RB Buxton
PLoS One 8 (1), e54816, 2013
132013
The coupling of cerebral blood flow and oxygen metabolism with brain activation is similar for simple and complex stimuli in human primary visual cortex
VEM Griffeth, AB Simon, RB Buxton
Neuroimage 104, 156-162, 2015
122015
Can the calibrated BOLD scaling factor M be estimated just from R2′ in the baseline state without administering gases
NP Blockley, VE Griffeth, RB Buxton
Montreal, Canada: International Society for Magnetic Resonance in Medicine, 2011
42011
Cross-field analysis of the accuracy of hypercapnia calibrated BOLD
NP Blockley, VE Griffeth, P Jezzard, DP Bulte
International Society for Magnetic Resonance in Medicine, Salt Lake City, 2013
32013
A simple heuristic model for the BOLD response (that works remarkably well)
VEM Griffeth, NP Blockley, RB Buxton
Proc Intl Soc Mag Reson Med 20, 1-1, 2012
22012
A tool for investigating systematic bias in BOLD based MRI methods: An implementation of the detailed BOLD signal model
N Blockley, V Griffeth
University of Oxford, 2015
12015
Quantitative fMRI
NP Blockley, VEM Griffeth, AB Simon, RB Buxton
fMRI: From Nuclear Spins to Brain Functions, 215-243, 2015
12015
Evidence for a cerebral blood flow post‐stimulus undershoot contributing to the BOLD undershoot
VEM Griffeth, RB Buxton
Proceedings of the 22nd Annual Meeting of the International Society for …, 2014
12014
Modeling the effect of changes in hematocrit, O2 extraction fraction, and blood volume distribution on the BOLD signal and estimates of CMRO2 change with a calibrated BOLD method
V Griffeth, RB Buxton
Proceedings of the 18th Annual Meeting of the ISMRM, Piscataway, NJ, 2011
12011
Corrigendum: 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 …
RB Buxton, VEM Griffeth, F Moradi, A Shmuel
Frontiers in Neuroscience 8, 109661, 2014
2014
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Artículos 1–20