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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