Results 11 to 20 of about 423 (47)

Boosting BOLD fMRI by K-space density weighted echo planar imaging. [PDF]

open access: yesPLoS ONE, 2013
Functional magnetic resonance imaging (fMRI) has become a powerful and influential method to non-invasively study neuronal brain activity. For this purpose, the blood oxygenation level-dependent (BOLD) effect is most widely used. T2* weighted echo planar
Mario Zeller   +6 more
doaj   +1 more source

High-fidelity mesoscale in-vivo diffusion MRI through gSlider-BUDA and circular EPI with S-LORAKS reconstruction

open access: yesNeuroImage, 2023
Purpose: To develop a high-fidelity diffusion MRI acquisition and reconstruction framework with reduced echo-train-length for less T2* image blurring compared to typical highly accelerated echo-planar imaging (EPI) acquisitions at sub-millimeter ...
Congyu Liao   +9 more
doaj   +1 more source

High-resolution echo-planar spectroscopic imaging of the human calf. [PDF]

open access: yesPLoS ONE, 2014
BACKGROUND: This study exploits the speed benefits of echo-planar spectroscopic imaging (EPSI) to acquire lipid spectra of skeletal muscle. The main purpose was to develop a high-resolution EPSI technique for clinical MR scanner, to visualise the bulk ...
Jan Weis   +3 more
doaj   +1 more source

Multiplexed echo planar imaging for sub-second whole brain FMRI and fast diffusion imaging. [PDF]

open access: yesPLoS ONE, 2010
Echo planar imaging (EPI) is an MRI technique of particular value to neuroscience, with its use for virtually all functional MRI (fMRI) and diffusion imaging of fiber connections in the human brain.
David A Feinberg   +9 more
doaj   +1 more source

Evaluation of 2D Imaging Schemes for Pulsed Arterial Spin Labeling of the Human Kidney Cortex

open access: yesDiagnostics, 2018
A number of imaging readout schemes are proposed for renal arterial spin labeling (ASL) to quantify kidney cortex perfusion, including gradient echo-based methods of balanced fast field echo (bFFE) and gradient-echo echo-planar imaging (GE-EPI), or spin ...
Charlotte E. Buchanan   +2 more
doaj   +1 more source

Metabolite-Specific Echo Planar Imaging for Preclinical Studies with Hyperpolarized 13C-Pyruvate MRI

open access: yesTomography, 2023
Metabolite-specific echo-planar imaging (EPI) sequences with spectral–spatial (spsp) excitation are commonly used in clinical hyperpolarized [1-13C]pyruvate studies because of their speed, efficiency, and flexibility.
Sule I. Sahin   +10 more
doaj   +1 more source

3D Echo Planar Time-resolved Imaging (3D-EPTI) for ultrafast multi-parametric quantitative MRI

open access: yesNeuroImage, 2022
Multi-parametric quantitative MRI has shown great potential to improve the sensitivity and specificity of clinical diagnosis and to enhance our understanding of complex brain processes, but suffers from long scan time especially at high spatial ...
Fuyixue Wang   +5 more
doaj   +1 more source

Fast 3 T nigral hyperintensity magnetic resonance imaging in Parkinson’s disease

open access: yesScientific Reports, 2021
The absence of nigral hyperintensity is a promising MR marker for Parkinson’s disease (PD), but its small size imposes limitations on its routine use. Our aim was to compare Multi Echo Data Image Combination (MEDIC), segmented echo-planar imaging (EPISEG)
Gabriella Hernadi   +7 more
doaj   +1 more source

A Multimodal Radar-Ultrasound Imaging Concept for Improved Display of Concealed Objects

open access: yesIEEE Access, 2019
Subsurface radar imaging provides an insight into hidden scenes: For example, in security screening, radar can be used for the detection of dangerous objects or contraband.
Ingrid Ullmann   +3 more
doaj   +1 more source

Examples of sub-millimeter, 7T, T1-weighted EPI datasets acquired with the T123DEPI sequence

open access: yesData in Brief, 2018
These imaging data are examples of sub-millimeter resolution T1-weighted EPI (Echo Planar Imaging) acquired using the T123DEPI (T1-imaging with 2 3D-EPIs) sequence [1]; functional MRI data with matching resolution and distortion, and MP2RAGE ...
Wietske van der Zwaag   +6 more
doaj   +1 more source

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