Spiral readout gradients for the reduction of motion artifacts in chemical shift imaging
Vertical Tabs
Magn Reson Med
2004 Mar
51
3
458-63
10.1002/mrm.20004
Journal Articles
PubMed ID:
15004785
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.
Year:
2004