Echo-Planar Imaging
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Subject Areas on Research
- A fast spin echo technique with circular sampling.
- A robust multi-shot scan strategy for high-resolution diffusion weighted MRI enabled by multiplexed sensitivity-encoding (MUSE).
- A single-shot T2 mapping protocol based on echo-split gradient-spin-echo acquisition and parametric multiplexed sensitivity encoding based on projection onto convex sets reconstruction.
- Accelerating EPI distortion correction by utilizing a modern GPU-based parallel computation.
- Activity and functional connectivity of inferior frontal cortex associated with response conflict.
- Application of k-space energy spectrum analysis to susceptibility field mapping and distortion correction in gradient-echo EPI.
- Assessment of 3D proton MR echo-planar spectroscopic imaging using automated spectral analysis.
- Assessment of cerebral microcirculation in a patient with hypertensive encephalopathy using MR perfusion imaging.
- Blipped multi gradient-echo slice excitation profile imaging (bmGESEPI) for fast T2 * measurements with macroscopic B0 inhomogeneity compensation.
- Cerebral N-acetylaspartate is low in patients with multiple sclerosis and abnormal visual evoked potentials.
- Complex fetal disorders: effect of MR imaging on management--preliminary clinical experience.
- Contrast-enhanced free-breathing 3D T1-weighted gradient-echo sequence for hepatobiliary MRI in patients with breath-holding difficulties.
- Correction for EPI distortions using multi-echo gradient-echo imaging.
- Correction for direction-dependent distortions in diffusion tensor imaging using matched magnetic field maps.
- Cortical mechanisms for the segregation and representation of acoustic textures.
- Creutzfeldt-jakob disease involvement of rolandic cortex: a quantitative apparent diffusion coefficient evaluation.
- Deep venous thrombosis: gradient-recalled-echo MR imaging changes over time--experience in 10 patients.
- Diffusion weighted fMRI at 1.5 T.
- Diffusion-weighted MR imaging of the normal human spinal cord in vivo.
- Dual gradient-echo in-phase and opposed-phase hepatic MR imaging: a useful tool for evaluating more than fatty infiltration or fatty sparing.
- Dynamic and inherent B0 correction for DTI using stimulated echo spiral imaging.
- Echo-volume imaging.
- Effect of echo time pair selection on quantitative analysis for adrenal tumor characterization with in-phase and opposed-phase MR imaging: initial experience.
- Effect of gadolinium chelate contrast agents on diffusion weighted MR imaging of the liver, spleen, pancreas and kidney at 3 T.
- Effectiveness of a three-dimensional dual gradient echo two-point Dixon technique for the characterization of adrenal lesions at 3 Tesla.
- Enhanced spatial localization of neuronal activation using simultaneous apparent-diffusion-coefficient and blood-oxygenation functional magnetic resonance imaging.
- Fast spectroscopic imaging strategies for potential applications in fMRI.
- Functional MR imaging using a visually guided saccade paradigm for comparing activation patterns in patients with probable Alzheimer's disease and in cognitively able elderly volunteers.
- Functional MRI using regularized parallel imaging acquisition.
- Functional gait outcomes for idiopathic normal pressure hydrocephalus after primary endoscopic third ventriculostomy.
- GRASE improves spatial resolution in single shot imaging.
- Gray and white matter brain chemistry in young children with autism.
- High-field (9.4 T) MRI of brain dysmyelination by quantitative mapping of magnetic susceptibility.
- High-resolution echo-planar fMRI of human visual cortex at 3.0 tesla.
- Improved image reconstruction for partial Fourier gradient-echo echo-planar imaging (EPI).
- Integrated parallel reception, excitation, and shimming (iPRES) with multiple shim loops per radio-frequency coil element for improved B0 shimming.
- Integrated radio-frequency/wireless coil design for simultaneous MR image acquisition and wireless communication.
- Interleaved EPI based fMRI improved by multiplexed sensitivity encoding (MUSE) and simultaneous multi-band imaging.
- Interleaved diffusion-weighted improved by adaptive partial-Fourier and multiband multiplexed sensitivity-encoding reconstruction.
- Joint 2D and 3D phase processing for quantitative susceptibility mapping: application to 2D echo-planar imaging.
- Joint correction of Nyquist artifact and minuscule motion-induced aliasing artifact in interleaved diffusion weighted EPI data using a composite two-dimensional phase correction procedure.
- Late-life depression and microstructural abnormalities in dorsolateral prefrontal cortex white matter.
- Lymphomas and high-grade astrocytomas: comparison of water diffusibility and histologic characteristics.
- MR imaging of high-grade cerebral gliomas: value of diffusion-weighted echoplanar pulse sequences.
- Motion immune diffusion imaging using augmented MUSE for high-resolution multi-shot EPI.
- Multi-spin echo spatial encoding provides three-fold improvement of temperature precision during intermolecular zero quantum thermometry.
- Neural mechanisms of top-down control during spatial and feature attention.
- Optimized MR imaging for polyacrylamide gel dosimetry.
- Optimized distortion correction technique for echo planar imaging.
- Optimized isotropic diffusion weighting.
- Overview of diffusion imaging.
- PROPELLER EPI: an MRI technique suitable for diffusion tensor imaging at high field strength with reduced geometric distortions.
- Phase correction for three-dimensional (3D) diffusion-weighted interleaved EPI using 3D multiplexed sensitivity encoding and reconstruction (3D-MUSER).
- Potential use of oxygen as a metabolic biosensor in combination with T2*-weighted MRI to define the ischemic penumbra.
- Rapid three-dimensional MR imaging method for tracking a bolus of contrast agent through the brain.
- Regional brain chemical alterations in young children with autism spectrum disorder.
- Regional differences in the refractory period of the hemodynamic response: an event-related fMRI study.
- Removal of EPI Nyquist ghost artifacts with two-dimensional phase correction.
- Segmented spin-echo pulses to increase fMRI signal: repeated intrinsic diffusional enhancement.
- Separation of parallel encoded complex-valued slices (SPECS) from a single complex-valued aliased coil image.
- Simultaneous and inherent correction of B0 and eddy-current induced distortions in high-resolution diffusion MRI using reversed polarity gradients and multiplexed sensitivity encoding (RPG-MUSE).
- Simultaneous multislice acquisition with arterial-flow tagging (SMART) using echo planar imaging (EPI).
- Single-shot EPI with signal recovery from the susceptibility-induced losses.
- Spatially selective T2 and T2 * measurement with line-scan echo-planar spectroscopic imaging.
- Spin-echo magnetic resonance spectroscopic imaging at 7 T with frequency-modulated refocusing pulses.
- Structure--function spatial covariance in the human visual cortex.
- Task-independent and task-specific age effects on brain activity during working memory, visual attention and episodic retrieval.
- Temperature dependence of canine brain tissue diffusion coefficient measured in vivo with magnetic resonance echo-planar imaging.
- Temperature mapping considerations in the breast with line scan echo planar spectroscopic imaging.
- The effect of daily caffeine use on cerebral blood flow: How much caffeine can we tolerate?
- Two-dimensional phase cycled reconstruction for inherent correction of echo-planar imaging Nyquist artifacts.
- fMRI: methodology--acquisition and processing.
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Keywords of People
- Johnson, G. Allan, Charles E. Putman University Distinguished Professor of Radiology, Physics