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Assessing the effects of subject motion on T2 relaxation under spin tagging (TRUST) cerebral oxygenation measurements using volume navigators
3D volume navigators are incorporated into the TRUST pulse sequence to permit evaluation of errors in estimates of blood T2 when using the T2‐relaxation under spin tagging (TRUST) technique on noncompliant subjects like neonates. Expand
Regional quantification of cerebral venous oxygenation from MRI susceptibility during hypercapnia
Testing whether susceptibility imaging of oxygenation can detect OEF changes induced by hypercapnia, via CO2 inhalation, within selected a priori brain regions suggests that susceptibility imaging is a promising technique for OEF measurements, and may serve as a clinical biomarker for brain conditions with aberrant regional oxygenation. Expand
Exploring early human brain development with structural and physiological neuroimaging
Although neuroimaging approaches have contributed significantly to the authors' understanding of early brain development, there is much yet to be done and a dire need for technical innovations and scientific discoveries to realize the future potential of early fetal and infant interventions to avert long term disease. Expand
Mitigation of partial volume effects in susceptibility‐based oxygenation measurements by joint utilization of magnitude and phase (JUMP)
A technique is developed to improve the reliability of vessel oxygenation estimates in the presence of partial volume effects to provide localized assessment of brain function and pathology. Expand
Placental MRI: Effect of maternal position and uterine contractions on placental BOLD MRI measurements.
Both maternal position and Braxton-Hicks contractions significantly affect global and regional changes in placental R2* and regional TTP, which suggests that both factors must be taken into account in analyses when comparing placental BOLD signals over time within and between individuals. Expand
Placental MRI: Developing Accurate Quantitative Measures of Oxygenation.
An overview of the current state of the art of oxygen transport and quantification with MRI is provided and it is suggested that as these techniques are being developed, increased focus be placed on ensuring they are robust and reliable across individuals and standardized to enable predictive diagnostic models to be generated from the data. Expand
Functional oxygen extraction fraction (OEF) imaging with turbo gradient spin echo QUIXOTIC (Turbo QUIXOTIC)
This work implemented multiecho QUIXOTIC dubbed turbo QUIxOTIC (tQUIXOTic) that reduces scan time eightfold and then applied it in functional MRI. Expand
Regional quantification of cerebral venous oxygenation from MRI susceptibility mapping during hypercapnia
Regional quantification of cerebral venous oxygenation from MRI susceptibility mapping during hypercapnia Audrey P Fan, Karleyton C Evans, Jeffrey N Stout, Bruce R Rosen, and Elfar AdalsteinssonExpand
Longitudinal Changes in Magnetic Resonance Spectroscopy in Pediatric Concussion: A Pilot Study
Proton magnetic resonance spectroscopy offers a means for non-invasive measurement of neurometabolic changes after concussion, and changes in glutamate+glutamine and myo-inositol concentrations detectable by 1H MRS may develop beyond the acute period. Expand
Mapping language from MEG beta power modulations during auditory and visual naming
Evaluation of language dominance is an essential step prior to epilepsy surgery. There is no consensus on an optimal methodology for determining language dominance using magnetoencephalography (MEG).Expand