Robustness of fat quantification using chemical shift imaging
نویسندگان
چکیده
منابع مشابه
High SNR Acquisitions Improve the Repeatability of Liver Fat Quantification Using Confounder-corrected Chemical Shift-encoded MR Imaging
PURPOSE To determine whether high signal-to-noise ratio (SNR) acquisitions improve the repeatability of liver proton density fat fraction (PDFF) measurements using confounder-corrected chemical shift-encoded magnetic resonance (MR) imaging (CSE-MRI). MATERIALS AND METHODS Eleven fat-water phantoms were scanned with 8 different protocols with varying SNR. After repositioning the phantoms, the ...
متن کاملQuantification of liver fat in mice: comparing dual-echo Dixon imaging, chemical shift imaging, and 1H-MR spectroscopy.
We evaluated dual-echo Dixon in-phase and out-of-phase (IP-OP), chemical shift imaging (CSI), and (1)H MRS (hydrogen MR spectroscopy) in estimating fat content (FC) in phantoms and in livers of mice. Phantoms were made according to the volume percentage of fat ranging from 0% to 100%. The three MR methods were performed to measure FC in phantoms and in livers of obese leptin-deficient (ob/ob), ...
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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...
متن کاملMultisection fat-water imaging with chemical shift selective presaturation.
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...
متن کاملCompressive Chemical-Shift-Based Rapid Fat/Water Imaging
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 Imaging
سال: 2012
ISSN: 0730-725X
DOI: 10.1016/j.mri.2011.09.011