Two-point dixon fat–water separation: Improving reliability and accuracy in phase correction algorithms
نویسندگان
چکیده
منابع مشابه
Linear phase-error correction for improved water and fat separation in dual-echo dixon techniques.
Large and spatially-linear phase errors along the frequency-encode direction may be induced by several common and hard-to-avoid system imperfections such as eddy currents. For data acquired in dual-echo Dixon techniques, the linear phase error can be more aggravated when compared to that acquired in a single echo and can pose challenges to a phase-correction algorithm necessary for successful D...
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Two-point water-fat imaging with partially-opposed-phase (POP) acquisition: an asymmetric Dixon method.
A novel two-point water-fat imaging method is introduced. In addition to the in-phase acquisition, water and fat magnetization vectors are sampled at partially-opposed-phase (POP) rather than exactly antiparallel as in the original Dixon method. This asymmetric sampling encodes more valuable phase information for identifying water and fat. From the magnitudes of the two complex images, a big an...
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In MRI, the suppression of fat signal is very important for many applications. Multipoint Dixon based water-fat separation methods are commonly used due to its robustness to B(0) homogeneity compared with other fat suppression methods, such as spectral fat saturation. The traditional Cartesian k-space trajectory based multipoint Dixon technique is sensitive to motion, such as pulsatile blood fl...
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ژورنال
عنوان ژورنال: Journal of Magnetic Resonance Imaging
سال: 2008
ISSN: 1053-1807,1522-2586
DOI: 10.1002/jmri.21310