Two-point dixon technique provides robust fat suppression for multi-mouse imaging
نویسندگان
چکیده
منابع مشابه
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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Introduction Dixon methods do not only provide a more robust fat suppression in the presence of field inhomogeneity than selective saturation and excitation methods, but also promise a more complete fat suppression, when multi-peak spectral models of fat are employed in the separation. The latter has convincingly been demonstrated for a three-point method lately [1]. In this work, such models a...
متن کاملDirect water and fat determination in two-point Dixon imaging with flexible echo times.
PURPOSE Identifying water and fat unambiguously in multipoint Dixon imaging often requires phase correction, which can be challenging and may fail. The purpose of this work is to present a geometric interpretation of the two-point Dixon method with flexible echo times (TEs) and to investigate the conditions under which water and fat can be determined directly without phase correction. METHODS...
متن کاملRobust Fat Suppression for High-resolution Diffusion-weighted Imaging
Introduction The diffusion-weighted imaging techniques can greatly benefit from an increase in image resolution as smaller voxels reductes the effects of partial volume with surrounding tissue. By scanning in the 3T environment a significant gain in SNR is achieved which facilitates the ability for higher resolution scans. In diffusion tensor imaging (DTI) it is important to acquire data with i...
متن کاملFast spin-echo triple-echo dixon (fTED) technique for efficient T2-weighted water and fat imaging.
Previously published fast spin-echo (FSE) implementations of a Dixon method for water and fat separation all require multiple scans and thus a relatively long scan time. Further, the minimum echo spacing (esp), a time critical for FSE image quality and scan efficiency, often needs to be increased in order to bring about the required phase shift between the water and fat signals. This work propo...
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ژورنال
عنوان ژورنال: Journal of Magnetic Resonance Imaging
سال: 2010
ISSN: 1053-1807,1522-2586
DOI: 10.1002/jmri.22060