Spiral readout gradients for the reduction of motion artifacts in chemical shift imaging.
نویسندگان
چکیده
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 reconstructed using the new motion artifact reduction algorithm showed significant signal-to-noise ratio (SNR) improvements as compared to uncorrected data.
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عنوان ژورنال:
- Magnetic resonance in medicine
دوره 51 3 شماره
صفحات -
تاریخ انتشار 2004