Interleaved water and fat dual‐echo spin echo imaging with intrinsic chemical‐shift elimination
نویسندگان
چکیده
منابع مشابه
High-resolution interleaved water-fat MR imaging of finger joints with chemical-shift elimination.
PURPOSE To study the use of an interleaved water-fat (IWF) sequence with a custom-made radiofrequency (RF) coil for high-resolution imaging of arthritic finger joints. MATERIALS AND METHODS High-resolution finger magnetic resonance imaging (MRI) was performed using a custom-made dedicated RF receiver coil and an IWF sequence. A phantom, a cadaver finger specimen, and the fingers of two normal...
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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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Chemical shift based methods are often used to achieve uniform water-fat separation that is insensitive to Bo inhomogeneities. Many spin-echo (SE) or fast SE (FSE) approaches acquire three echoes shifted symmetrically about the SE, creating time-dependent phase shifts caused by water-fat chemical shift. This work demonstrates that symmetrically acquired echoes cause artifacts that degrade image...
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Introduction Turbo spin echo (TSE) sequences with black blood preparation pulses are an important component of cardiac MRI. It is commonly used for tissue characterization and anatomical assessment of the myocardium, e.g. for edema imaging aiming at the differentiation of acute from chronic myocardial infarction. TSE benefits from high SNR and the availability of good T1 or T2 weighting. So far...
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Introduction In cardiac magnetic resonance imaging, separation of water and fat signals is important for improved visualization of enhancing myocardium and pericardial disease, as well as direct visualization of fat in pathologies such as arrythmogenic right ventricular cardiomyopathy (ARVC), fatty tumors, and fatty infiltration of chronic myocardial infarctions. Fat can appear similar to slow ...
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ژورنال
عنوان ژورنال: Journal of Magnetic Resonance Imaging
سال: 2001
ISSN: 1053-1807,1522-2586
DOI: 10.1002/1522-2586(200102)13:2<318::aid-jmri1046>3.3.co;2-5