Search Results - "Driver, Ian D"

Vascular physiology drives functional brain networks by Bright, Molly G., Whittaker, Joseph R., Driver, Ian D., Murphy, Kevin

“…We present the first evidence for vascular regulation driving fMRI signals in specific functional brain networks. Using concurrent neuronal and vascular…”
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Multi-site harmonization of 7 tesla MRI neuroimaging protocols by Clarke, William T., Mougin, Olivier, Driver, Ian D., Rua, Catarina, Morgan, Andrew T., Asghar, Michael, Clare, Stuart, Francis, Susan, Wise, Richard G., Rodgers, Christopher T., Carpenter, Adrian, Muir, Keith, Bowtell, Richard

“…Increasing numbers of 7 T (7 T) magnetic resonance imaging (MRI) scanners are in research and clinical use. 7 T MRI can increase the scanning speed, spatial…”
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Cerebral Autoregulation Evidenced by Synchronized Low Frequency Oscillations in Blood Pressure and Resting-State fMRI by Whittaker, Joseph R, Driver, Ian D, Venzi, Marcello, Bright, Molly G, Murphy, Kevin

“…Resting-state functional magnetic resonance imaging (rs-fMRI) is a widely used technique for mapping the brain's functional architecture, so delineating the…”
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Multi-centre, multi-vendor reproducibility of 7T QSM and R2 in the human brain: Results from the UK7T study by Rua, Catarina, Clarke, William T., Driver, Ian D., Mougin, Olivier, Morgan, Andrew T., Clare, Stuart, Francis, Susan, Muir, Keith W., Wise, Richard G., Carpenter, T. Adrian, Williams, Guy B., Rowe, James B., Bowtell, Richard, Rodgers, Christopher T.

“…We present the reliability of ultra-high field T2* MRI at 7T, as part of the UK7T Network's “Travelling Heads” study. T2*-weighted MRI images can be processed…”
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Most Small Cerebral Cortical Veins Demonstrate Significant Flow Pulsatility: A Human Phase Contrast MRI Study at 7T by Driver, Ian D, Traat, Maarika, Fasano, Fabrizio, Wise, Richard G

“…Phase contrast MRI (pcMRI) has been used to investigate flow pulsatility in cerebral arteries, larger cerebral veins, and the cerebrospinal fluid (CSF). Such…”
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Graded Hypercapnia-Calibrated BOLD: Beyond the Iso-metabolic Hypercapnic Assumption by Driver, Ian D, Wise, Richard G, Murphy, Kevin

“…Calibrated BOLD is a promising technique that overcomes the sensitivity of conventional fMRI to the cerebrovascular state; measuring either the basal level, or…”
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Corrigendum: Cerebral Autoregulation Evidenced by Synchronized Low Frequency Oscillations in Blood Pressure and Resting-State fMRI by Whittaker, Joseph R, Driver, Ian D, Venzi, Marcello, Bright, Molly G, Murphy, Kevin

“…[This corrects the article DOI: 10.3389/fnins.2019.00433.]…”
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Global intravascular and local hyperoxia contrast phase-based blood oxygenation measurements by Driver, Ian D., Wharton, Samuel J., Croal, Paula L., Bowtell, Richard, Francis, Susan T., Gowland, Penny A.

“…The measurement of venous cerebral blood oxygenation (Yv) has potential applications in the study of patient groups where oxygen extraction and/or metabolism…”
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The absolute CBF response to activation is preserved during elevated perfusion: Implications for neurovascular coupling measures by Whittaker, Joseph R., Driver, Ian D., Bright, Molly G., Murphy, Kevin

“…Functional magnetic resonance imaging (fMRI) techniques in which the blood oxygenation level dependent (BOLD) and cerebral blood flow (CBF) response to a…”
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Venous contribution to sodium MRI in the human brain by Driver, Ian D., Stobbe, Robert W., Wise, Richard G., Beaulieu, Christian

“…Purpose Sodium MRI shows great promise as a marker for cerebral metabolic dysfunction in stroke, brain tumor, and neurodegenerative pathologies. However,…”
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Arterial CO2 Fluctuations Modulate Neuronal Rhythmicity: Implications for MEG and fMRI Studies of Resting-State Networks by Driver, Ian D, Whittaker, Joseph R, Bright, Molly G, Muthukumaraswamy, Suresh D, Murphy, Kevin

“…A fast emerging technique for studying human resting state networks (RSNs) is based on spontaneous temporal fluctuations in neuronal oscillatory power, as…”
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Changes in arterial cerebral blood volume during lower body negative pressure measured with MRI by Whittaker, Joseph R., Bright, Molly G., Driver, Ian D., Babic, Adele, Khot, Sharmila, Murphy, Kevin

“…Cerebral Autoregulation (CA), defined as the ability of the cerebral vasculature to maintain stable levels of blood flow despite changes in systemic blood…”
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Whole brain 31P MRSI at 7T with a dual‐tuned receive array by Rowland, Benjamin C., Driver, Ian D., Tachrount, Mohamed, Klomp, Dennis W. J., Rivera, Debra, Forner, Ria, Pham, Anh, Italiaander, Michel, Wise, Richard G.

“…Purpose The design and performance of a novel head coil setup for 31P spectroscopy at ultra‐high field strengths (7T) is presented. The described system…”
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Coupling between cerebral blood flow and cerebral blood volume: Contributions of different vascular compartments by Wesolowski, Roman, Blockley, Nicholas P., Driver, Ian D., Francis, Susan T., Gowland, Penny A.

“…A better understanding of the coupling between changes in cerebral blood flow (CBF) and cerebral blood volume (CBV) is vital for furthering our understanding…”
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Field strength dependence of grey matter R2 on venous oxygenation by Croal, Paula L., Driver, Ian D., Francis, Susan T., Gowland, Penny A.

“…The relationship between venous blood oxygenation and change in transverse relaxation rate (ΔR2*) plays a key role in calibrated BOLD fMRI. This relationship,…”
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An improved method for acquiring cerebrovascular reactivity maps by Blockley, Nicholas P., Driver, Ian D., Francis, Susan T., Fisher, Joseph A., Gowland, Penny A.

“…This study aims to improve the method used to produce cerebrovascular reactivity (CVR) maps by MRI. Previous methods have used a standard boxcar presentation…”
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Field strength dependence of grey matter R 2 on venous oxygenation by Croal, Paula L, Driver, Ian D, Francis, Susan T, Gowland, Penny A

“…The relationship between venous blood oxygenation and change in transverse relaxation rate (ΔR ) plays a key role in calibrated BOLD fMRI. This relationship,…”
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The Central Vein Sign in Multiple Sclerosis Lesions Is Present Irrespective of the T2 Sequence at 3 T by Samaraweera, Amal P. R., Clarke, Margareta A., Whitehead, Amy, Falah, Yasser, Driver, Ian D., Dineen, Robert A., Morgan, Paul S., Evangelou, Nikos

“…ABSTRACT BACKGROUND AND PURPOSE Previous T2*‐weighted magnetic resonance imaging (MRI) studies have used white matter lesion (WML) central veins to distinguish…”
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The effect of isocapnic hyperoxia on neurophysiology as measured with MRI and MEG by Croal, Paula L., Hall, Emma L., Driver, Ian D., Brookes, Matthew J., Gowland, Penny A., Francis, Susan T.

“…The physiological effect of hyperoxia has been poorly characterize d, with studies reporting conflicting results on the role of hyperoxia as a vasoconstrictor…”
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The effect of hypercapnia on resting and stimulus induced MEG signals by Hall, Emma L., Driver, Ian D., Croal, Paula L., Francis, Susan T., Gowland, Penny A., Morris, Peter G., Brookes, Matthew J.

“…The effect of hypercapnia (an increase in CO2 concentration in the blood) on the functional magnetic resonance imaging (fMRI) blood oxygenation level dependent…”
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