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A general kinetic model for quantitative perfusion imaging with arterial spin labeling
- R. Buxton, L. Frank, E. Wong, Bettina Siewert, S. Warach, R. Edelman
- BiologyMagnetic resonance in medicine
- 1 September 1998
A general kinetic model for the ASL signal is described that can be used to assess systematic errors in arterial spin labeling techniques and provided a good description of pulsed ASL data during a simple sensorimotor activation task.
Acute human stroke studied by whole brain echo planar diffusion‐weighted magnetic resonance imaging
Whole brain echo planar magnetic resonance imaging is used to identify and characterize diffusion abnormalities in acute cerebral ischemia and measures a unique physiological parameter that is sensitive to ischemic changes before conventional MRI, which has potential role in the quantitative study of human stroke pathophysiology and therapeutics.
Noninvasive evaluation of intrarenal oxygenation with BOLD MRI.
BOLD MRI can be used to monitor changes in intrarenal oxygenation in humans in a noninvasive fashion and demonstrates the feasibility of such a method on the basis of blood oxygenation level-dependent (BOLD) MRI.
Qualitative mapping of cerebral blood flow and functional localization with echo-planar MR imaging and signal targeting with alternating radio frequency.
The EPISTAR technique is a rapid, noninvasive means for creating qualitative maps of cerebral blood flow and changes in the motor strip, primary visual cortex, and the motor area for eye movements were well localized to the cortical gray matter ribbon.
Shared neural substrates controlling hand movements in human motor cortex.
A functional magnetic resonance imaging method that measures relative cerebral blood flow was used to identify a distributed, overlapping pattern of hand movement representation within the posterior precentral gyrus, which contains M1.
Monitoring the patient's EEG during echo planar MRI.
Clinical experience with diffusion-weighted MR in patients with acute stroke.
High sensitivity and specificity are suggested for echo-planar diffusion-weighted MR imaging in the diagnosis of acute cerebral infarction, although negative scans did not rule out an ischemic pathogenesis.
Diffusion alterations in corpus callosum of patients with HIV.
- Y. Wu, P. Storey, B. Cohen, L. Epstein, R. Edelman, A. Ragin
- Medicine, PsychologyAJNR. American journal of neuroradiology
- 1 March 2006
Diffusion abnormalities were identified in the splenium of the corpus callosum in patients infected with HIV, and these alterations were associated with dementia severity and motor speed losses.
Noninvasive assessment of regional ventilation in the human lung using oxygen–enhanced magnetic resonance imaging
A novel approach for ventilation scanning is proposed, using magnetic resonance imaging (MRI) and inhaled molecular oxygen as a contrast agent, that directly depicts transfer of oxygen across the alveolus into the pulmonary vasculature.