Keyhole Dixon method for faster, perceptually equivalent fat suppression
نویسندگان
چکیده
منابع مشابه
CS-Dixon: Compressed Sensing for Water-Fat Dixon Reconstruction
Introduction: Water-fat separation is of interest in several MRI applications including fat suppression and fat quantification. Chemical shift imaging allows robust water-fat separation [1, 2], however the acquisition of multiple images results in prolonged scan time. Accelerated water-fat separation using compressed sensing (CS) was partly addressed in [3] by considering the separation as a sp...
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Introduction Recently, the gradientand spin-echo (GRASE) technique has been used to increase efficiency in Dixon fat-water imaging [1,2]. In these sequences, oscillating gradient lobes are carefully positioned between spin refocusing pulses to acquire multiple echoes with the necessary fat-water phase shifts. As it is necessary to collect at least two echoes with approximately π fat-water phase...
متن کاملComparison of Dixon Methods for Fat Suppression in Single Breath-Hold 3D Gradient-Echo Abdominal MRI
Introduction A variety of Dixon methods has been proposed over the last years that permit a robust fat suppression in inhomogeneous magnetic fields [1-3]. Apart from different strategies to separate water and fat signal, the individual methods are mainly characterized by the number of echo times, or points, that they rely on and by the constraints that they impose on these echo times. In this w...
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Background X-Ray coronary angiography (XRA) remains the gold standard for assessment of coronary artery disease (CAD) although has associated clinical risk and financial cost. Coronary artery magnetic resonance angiography (CMRA) requires effective fat suppression as the epicardial vessels are embedded within fat. The aim of this study was to assess the diagnostic performance of non-contrast en...
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Conventional approaches for fat and water discrimination based on chemical-shift fat suppression have reduced ability to characterize fatty infiltration due to poor contrast of microscopic fat. The multiecho Dixon approach to water and fat separation has advantages over chemical-shift fat suppression: 1) water and fat images can be acquired in a single breathhold, avoiding misregistration; 2) f...
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ژورنال
عنوان ژورنال: Journal of Magnetic Resonance Imaging
سال: 2003
ISSN: 1053-1807,1522-2586
DOI: 10.1002/jmri.10323