Direct measurement of oxygen extraction with fMRI using 6% CO2 inhalation

AC Zappe, K Uludağ, NK Logothetis - Magnetic resonance imaging, 2008 - Elsevier
The blood-oxygenation-level-dependent (BOLD) signal is an indirect hemodynamic signal
that is sensitive to cerebral blood flow (CBF), cerebral blood volume (CBV) and cerebral …

Calibrated fMRI for mapping absolute CMRO2: Practicalities and prospects

M Germuska, RG Wise - Neuroimage, 2019 - Elsevier
Functional magnetic resonance imaging (fMRI) is an essential workhorse of modern
neuroscience, providing valuable insight into the functional organisation of the brain. The …

Dynamic forcing of end-tidal carbon dioxide and oxygen applied to functional magnetic resonance imaging

RG Wise, KTS Pattinson, DP Bulte… - Journal of Cerebral …, 2007 - journals.sagepub.com
Investigations into the blood oxygenation level-dependent (BOLD) functional MRI signal
have used respiratory challenges with the aim of probing cerebrovascular physiology. Such …

[HTML][HTML] Dual-calibrated fMRI measurement of absolute cerebral metabolic rate of oxygen consumption and effective oxygen diffusivity

M Germuska, HL Chandler, RC Stickland, C Foster… - Neuroimage, 2019 - Elsevier
Dual-calibrated fMRI is a multi-parametric technique that allows for the quantification of the
resting oxygen extraction fraction (OEF), the absolute rate of cerebral metabolic oxygen …

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 …

Quantification of CMRO2 without hypercapnia using simultaneous near-infrared spectroscopy and fMRI measurements

S Tak, J Jang, K Lee, JC Ye - Physics in Medicine & Biology, 2010 - iopscience.iop.org
Estimation of the cerebral metabolic rate of oxygen (CMRO 2) and cerebral blood flow (CBF)
is important to investigate the neurovascular coupling and physiological components in …

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 …

Dynamics of changes in blood flow, volume, and oxygenation: implications for dynamic functional magnetic resonance imaging calibration

I Kida, DL Rothman, F Hyder - Journal of Cerebral Blood …, 2007 - journals.sagepub.com
Changes in cerebral blood flow (CBF), volume (CBV), and oxygenation (blood-oxygenation
level dependent (BOLD)) during functional activation are important for calculating changes …

MRI-based methods for quantification of the cerebral metabolic rate of oxygen

ZB Rodgers, JA Detre… - Journal of Cerebral Blood …, 2016 - journals.sagepub.com
The brain depends almost entirely on oxidative metabolism to meet its significant energy
requirements. As such, the cerebral metabolic rate of oxygen (CMRO2) represents a key …

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 …