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Abstract #1506

Accelerated 3D EPI using 2D blipped-CAIPI for high temporal and/or spatial resolution

Benedikt A Poser 1,2 , Dimo Ivanov 1 , Stephan A Kannengiesser 3 , Kamil Uludag 1 , and Markus Barth 2,4

1 Faculty of Psychology and Neuroscience, Maastricht University, 6200MD Maastricht, Netherlands, 2 Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, Nijmegen, Netherlands, 3 MR Applications Development, Siemens AG, Healthcare Sector, Erlangen, Germany, 4 Erwin L Hahn Institute for Magnetic Resonance Imaging, University Duisburg-Essen, Essen, Germany

2D CAIPIRINHA greatly improves volumetric parallel imaging reconstructions by making optimal use of the available coil sensitivities and distributing the image alias over the reduced FOV. We demonstrate blipped-CAIPIRINHA in 3D EPI, where CAIPIRINHAs ability to freely distribute the undersampling capability between the two phase-encoding directions creates the flexibility to: (a) use maximum through-plane acceleration to achieve very short TR, (b) use maximum in-plane acceleration to shorten EPI echo train for high-spatial resolution and minimal geometric distortion, or (c) any trade-off between the two. Each case is demonstrated with a total undersampling factor 16.

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