Concentrically circular echo planar spectroscopic imaging at 3T and 7T with partial temporal interleaving
Neil Wilson1, Hari Hariharan1, M. Albert Thomas2, and Ravinder Reddy1
1Radiology, University of Pennsylvania, Philadelphia, PA, United States, 2Radiology, University of California, Los Angeles, CA, United States
We use concentric circular echo planar k-space readout to spectroscopic sampling at high field. At high field, higher bandwidths are required which are difficult to achieve using echo planar techniques due to gradient limitations. Often temporal interleaving is employed to mitigate this. Circular k-space sampling is unique among the echo planar trajectories in that different rings can be sampled at different rates, requiring only partial temporal interleaving.
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