Flow-induced signal misallocation artifacts in two-point fat-water chemical shift MRI
نویسندگان
چکیده
منابع مشابه
Quantification of susceptibility-induced fat resonance shift on chemical shift-based water/fat separation of skeletal muscle
Introduction: The quantification of skeletal muscle fatty infiltration is important in assessing risk factors for metabolic abnormalities (like obesity and diabetes) [1] and in monitoring the progression of myopathies [2]. Muscular fat includes intramyocellular lipids (IMCLs) that are approximated as spherical droplets within myocytes and extramyocellular lipids (EMCLs) that are approximated as...
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Proton chemical shift imaging yielding separate water and lipid images was performed in a multisection mode on a clinical 1.5-T whole-body magnetic resonance imaging unit. Imaging was performed with a minor modification of the standard multisection spin-warp technique: that is, the addition of a sinc pulse or a soft square pulse and a homospoil gradient at the beginning of the pulse sequence. P...
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INTRODUCTION Quantitative water/fat separation in MRI requires careful modeling of the acquired signal. Multiple signal models have been proposed in recent years, but their relative performance has not yet been established. This abstract presents a comparative study of 12 signal models for water/fat separation. The models were selected according to three criteria: magnitude or complex fitting [...
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Multi echo chemical shift-based water-fat separation methods allow for uniform fat suppression in the presence of main field inhomogeneities. However, these methods require additional scan time for chemical shift encoding. This work presents a method for water-fat separation from undersampled data (CS-WF), which combines compressed sensing and chemical shift-based water-fat separation. Undersam...
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Introduction: Chemical-shift based fat and water separation techniques [1,2] are very common in practice and are effective in revealing important clinical information. They require imaging at multiple echo times, which often results in additional scan time. As compressed sensing (CS) [3-5] acceleration techniques become more available, it is necessary to be able to separate between fat and wate...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2014
ISSN: 0740-3194
DOI: 10.1002/mrm.25315