Multiparametric fat-water separation method for fast chemical-shift imaging guidance of thermal therapies
نویسندگان
چکیده
منابع مشابه
Improved fat suppression using multipeak reconstruction for IDEAL chemical shift fat-water separation: application with fast spin echo imaging.
PURPOSE To evaluate and quantify improvements in the quality of fat suppression for fast spin-echo imaging of the knee using multipeak fat spectral modeling and IDEAL fat-water separation. MATERIALS AND METHODS T(1)-weighted and T(2)-weighted fast spin-echo sequences with IDEAL fat-water separation and two frequency-selective fat-saturation methods (fat-selective saturation and fat-selective ...
متن کاملCompressed sensing for chemical shift-based water-fat separation.
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 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 [...
متن کاملImproved Fat-Suppression for Unspoiled GRASS Imaging of the Knee Using Multi-Peak IDEAL Chemical Shift Fat-Water Separation
Objective: Iterative Decomposition of water and fat with Echo Asymmetry and Least squares estimation (IDEAL) is a chemical shift based fat-water separation method that can be combined with unspoiled Gradient Recalled-echo Acquired in the Steady-State (GRASS) technique to produce high resolution, fat-suppressed images of the knee with bright synovial fluid (1). IDEAL-GRASS has high diagnostic pe...
متن کاملCardiac Imaging with Chemical Shift Based Water-Fat Separation at 3T
Introduction Chemical shift based water-fat separation techniques have been demonstrated for 1.5T cardiac imaging of several pathologies, including fatty infiltration of chronic infarction; arrhythmogenic right ventricular cardiomyopathy (ARVC); fatty tumors; and conditions such as myocarditis and pericarditis [1-4]. Higher field strengths (3T) are now often used in cardiac MRI due to improved ...
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ژورنال
عنوان ژورنال: Medical Physics
سال: 2013
ISSN: 0094-2405
DOI: 10.1118/1.4819815