Results 171 to 180 of about 32,112 (264)

View Order With Arbitrary Center Echoes

open access: yesMagnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To provide explicit, vendor‐independent view‐order constructions that enable selection of an arbitrary center echo in multi‐shot imaging, with a focus on RARE and MPRAGE. Methods Vendor‐independent view‐order methods were developed to assign echo and shot indices to a prescribed set of phase encodes, enabling explicit selection of the ...
Henric Rydén   +4 more
wiley   +1 more source

Effective Modeling of Continuous Wave Z$$ Z $$‐Spectra for Quantitative CEST and CESL MRI Across Exchange Regimes

open access: yesMagnetic Resonance in Medicine, EarlyView.
Purpose Chemical exchange saturation transfer (CEST) and chemical exchange‐sensitive spin‐lock (CESL) MRI enable spectroscopic imaging with high sensitivity, but conventional analysis methods often fail as exchange approaches the fast‐exchange limit.
Chris Lippe, Verena Hoerr
wiley   +1 more source

Cartesian MPnRAGE for Efficient Simultaneous Multi‐Contrast and Quantitative Relaxometry Imaging

open access: yesMagnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose T1‐weighted images with different weighting and T1 quantification can be useful in the differentiation of both native and pathologic tissue; however, acquiring multiple images requires substantial time. A rapid and robust brain imaging sequence was developed to simultaneously provide quantitative T1 maps and multiple T1‐weighted images.
Carly A. Allen   +5 more
wiley   +1 more source

The Potential for Absolute Temperature Imaging Based on Brain Metabolites Using an FID‐Shifting Approach in Gradient Echo Planar Spectroscopic Imaging (GREPSI)

open access: yesMagnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To implement and evaluate an efficient method for absolute temperature measurement using a gradient echo implementation of the echo planar spectroscopic imaging (EPSI) sequence. Methods The gradient echo EPSI sequence (GREPSI) utilizes an oscillating readout gradient together with continuous signal readout after slab selective ...
Dennis L. Parker   +5 more
wiley   +1 more source

Suppression of Oscillation and Ghosting in RF‐Spoiled Gradient‐Echo‐Based Dynamic Imaging

open access: yesMagnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose This study aims to address the suppression of oscillation and ghosting appearing in RF‐spoiled gradient‐echo‐based dynamic imaging, which is caused by the pseudo‐steady state (PSS) of magnetization. Theory and Methods We extended the concept of the previous RF phase‐cycle‐adapted averaging method to RF‐spoiled gradient‐echo‐based cine (
Jae‐Youn Keum, Jang‐Yeon Park
wiley   +1 more source

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