Spiral readout gradients for the reduction of motion artifacts in chemical shift imaging
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چکیده
منابع مشابه
Spiral readout gradients for the reduction of motion artifacts in chemical shift imaging.
A motion artifact reduction method for proton chemical shift imaging (CSI) is presented. The method uses spiral-based readout gradients for data acquisition. A characteristic of spiral-based readout gradients is that data are repeatedly sampled at the kxy origin. These data points are used to estimate and correct for motion-induced phase variations. Both phantom and in vivo spectra reconstructe...
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Time-varying view angle tilting with spiral readout gradients.
The conventional Fourier-transform-based spin-echo sequence with a view angle tilting gradient during data acquisition can correct the in-plane distortion induced by a chemical shift or B0 field inhomogeneity. However, when extended for 3D applications, alternate k-space sampling can be beneficial for reducing the lengthy scan time. As spiral trajectories have high k-space acquisition efficienc...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2004
ISSN: 0740-3194,1522-2594
DOI: 10.1002/mrm.20004