Abstract #1914

Concentric Rings K-Space Trajectory for Hyperpolarized 13C MRSI

Wenwen Jiang¹, Michael Lustig², Peder Larson³

¹UC Berkeley | UCSF Graduate Group in Bioengineering, Berkeley, CA, United States; ²Electrical Engineering, University of California, Berkeley, Berkeley, CA, United States; ³Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA, United States

Hyperpolarized ¹³C MR Spectroscopic Imaging (MRSI) is a novel noninvasive imaging technique which enables spatial mapping of physiological metabolites. But the short-lived effect of hyperpolarization poses severe challenges to develop rapid and robust imaging techniques. The current Echo-Planar Spectroscopic Imaging (EPSI) techniques are slew-rate limited and susceptible to system imperfections. Sampling k-space using concentric rings is advantageous to overcoming these limitations. We provide preliminary data that shows great potential for applying this approach to hyperpolarized ¹³C MRSI.