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Abstract #2805

k-Space Trajectory Mapping for Ultra-Short, Single-Shot, Non-Cartesian Imaging

Florian Wiesinger1, Pekka Tapani Sipilae1,2, Yi-Fen Yen3, Dirk Mayer4, Eric Fiveland5, Sebastian A. Greding1, Daniel M. Spielman4, Adolf Pfefferbaum4, Rolf F. Schulte1

1Imaging Technologies, GE Global Research, Munich, Germany; 2Institute for Physics of Electrotechnology, Technical University Munich, Munich, Germany; 3Global Applied Science Laboratory, GE Healthcare, Menlo Park, CA, USA; 4Department of Radiology, Stanford University School of Medicine, Stanford, CA, USA; 5MRI Laboratory, GE Global Research, Niskayuna, NY, USA

In-vivo MR image encoding speed is physiologically limited by gradient-induced peripheral nerve stimulations. This makes high performance gradient insert coils an attractive choice for performing small-animal MR imaging and microscopy studies in a whole-body, clinical MR scanner. Such enhanced performance also amplifies gradient imperfections due to Eddy currents, coupling effects, mechanical vibrations, etc. Recently, magnetic field sensors in the form of small NMR probes have been described as a highly accurate tool for spatiotemporal magnetic field mapping. In this work such magnetic field sensors were used in combination with a high-performance gradient insert coil for ultra-fast, single-shot, high-resolution, non-Cartesian imaging.