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Abstract #0763

T-Hex: Spiral sampling on a tilted hexagonal grid

Maria Engel1, Lars Kasper2, Bertram Wilm2,3, Benjamin Dietrich2, Laetitia Vionnet2, and Klaas Paul Pruessmann2

1Institute for Biomedical Engineering, ETH Zurich and University of Zurich, Zürich, Switzerland, 2ETH, Zürich, Switzerland, 3Skope Magnetic Resonance Technologies, Zurich, Switzerland

In this work, we show a stack of spirals on a tilted hexagonal grid. This trajectory is used for fast 3D acquisitions with long readouts and combines the optimal hexagonal 3D sampling with the high acquisition efficiency of spirals. Isotropic 2.8 mm whole-brain coverage is achieved in 200 ms relying on cg-SENSE reconstruction, without the need for non-linear regularization.

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