Magnetic resonance imaging of resting OEF and CMRO2 using a generalized calibration model for hypercapnia and hyperoxia

CJ Gauthier, RD Hoge - Neuroimage, 2012 - Elsevier
We present a method allowing determination of resting cerebral oxygen metabolism
(CMRO2) from MRI and end-tidal O2 measurements acquired during a pair of respiratory …

Measurement of OEF and absolute CMRO2: MRI-based methods using interleaved and combined hypercapnia and hyperoxia

RG Wise, AD Harris, AJ Stone, K Murphy - Neuroimage, 2013 - Elsevier
Blood oxygenation level dependent (BOLD) functional magnetic resonance imaging (fMRI)
is most commonly used in a semi-quantitative manner to infer changes in brain activity …

A generalized procedure for calibrated MRI incorporating hyperoxia and hypercapnia

CJ Gauthier, RD Hoge - Human brain mapping, 2013 - Wiley Online Library
Calibrated MRI techniques use the changes in cerebral blood flow (CBF) and blood
oxygenation level‐dependent (BOLD) signal evoked by a respiratory manipulation to …

Comparison of hypercapnia‐based calibration techniques for measurement of cerebral oxygen metabolism with MRI

DP Bulte, K Drescher, P Jezzard - Magnetic Resonance in …, 2009 - Wiley Online Library
MRI may be used to measure fractional changes in cerebral oxygen metabolism via a
metabolic model. One step commonly used in this measurement is calibration with image …

[HTML][HTML] 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… - Neuroimage, 2016 - Elsevier
Several techniques have been proposed to estimate relative changes in cerebral metabolic
rate of oxygen consumption (CMRO 2) by exploiting combined BOLD fMRI and cerebral …

MRI estimation of global brain oxygen consumption rate

V Jain, MC Langham… - Journal of Cerebral Blood …, 2010 - journals.sagepub.com
Measuring the global cerebral metabolic rate of oxygen (CMRO 2) is a valuable tool for
assessing brain vitality and function. Measurement of blood oxygen saturation (HbO 2) and …

Baseline oxygenation in the brain: correlation between respiratory-calibration and susceptibility methods

AP Fan, A Schäfer, L Huber, L Lampe, S von Smuda… - Neuroimage, 2016 - Elsevier
New MRI methods for noninvasive imaging of baseline oxygen extraction fraction (OEF) in
the brain show great promise. Quantitative O 2 imaging (QUO2) applies a biophysical model …

Cerebral oxygen demand for short‐lived and steady‐state events

P Herman, BG Sanganahalli… - Journal of …, 2009 - Wiley Online Library
Because of the importance of oxidative energetics for cerebral function, extraction of oxygen
consumption (CMRO2) from blood oxygenation level‐dependent (BOLD) signal using multi …

Quantitative measurement of cerebral physiology using respiratory-calibrated MRI

DP Bulte, M Kelly, M Germuska, J Xie, MA Chappell… - Neuroimage, 2012 - Elsevier
Functional magnetic resonance imaging typically measures signal increases arising from
changes in the transverse relaxation rate over small regions of the brain and associates …

Absolute quantification of resting oxygen metabolism and metabolic reactivity during functional activation using QUO2 MRI

CJ Gauthier, L Desjardins-Crépeau, C Madjar… - Neuroimage, 2012 - Elsevier
We have recently described an extension of calibrated MRI, which we term QUO2 (for
QUantitative O2 imaging), providing absolute quantification of resting oxidative metabolism …