Noam Ben-Eliezer1,
Lucio Frydman2, Daniel K. Sodickson1
1Bernard
and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, New
York University School of Medicine, New York, NY, United States; 2Department
of Chemical Physics, Weizmann Institute of Science, Rehovot, Israel
Recently a new MR acquisition scheme has been emerging, based on progressive point-by-point refocusing in the objects spatial rather than frequency domain, through the use of quadratic phase encoding. This technique, termed Spatiotemporal-Encoding (SPEN), is capable of overcoming sizable B0 and B1 field distortions, performing single-shot chemical-shift imaging (CSI), and produces reliable images under conditions that preclude the use of conventional acquisition schemes. This work presents a comprehensive analysis of SPENs parametric framework and signal-to-noise ratio (SNR) as compared to conventional <I>k</I>-space encoding, showing theoretically, and experimentally that the SNR of these two encoding techniques is comparable.
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