Abstract #1832

Zigzag-Aligned-Projections in Echo-Planar Imaging

Patrick Alexander Liebig^1,2, Robin Martin Heidemann², and David Andrew Porter³

¹Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany, ²Siemens Healthcare GmbH, Erlangen, Germany, ³Fraunhofer MEVIS, Bremen, Germany

A new approach to Echo-Planar Imaging (EPI) is introduced under the name Zigzag-Aligned-Projections (ZAP) that replaces the blipped phase-encoding (PE) gradient with the modulus of the readout (RO). This comes with two significant advantages: the reduction of acoustic noise due to the modified PE gradient and the higher efficiency due to continuous data sampling. ZAP EPI is the only EPI derivate that combines Cartesian GRAPPA using a fixed Kernel size with continuous data sampling. The reduction in acoustic noise was verified experimentally and volunteer images were acquired and processed with two reconstruction techniques.

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