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Abstract #4190

Segmented 3D EPI with CAIPIRINHA for Fast, High-Resolution T2*-weighted Imaging

Jin Jin1,2, Monique Tourell2, Pascal Sati3, Sunil Patil4, Kecheng Liu5, John Derbyshire6, Fei Han7, Saskia Bollmann2, Simon Robinson2, Josef Pfeuffer8, Steffen Bollmann2, Markus Barth2, and Kieran O'Brien1
1Siemens Healthcare, Brisbane, Australia, 2The University of Queensland, Brisbane, Australia, 3Cedars-Sinai Medical Center, Los Angeles, CA, United States, 4Siemens Medical Solutions USA, Baltimore, MD, United States, 5Siemens Medical Solutions USA, Baltimore, OH, United States, 6National Institute of Mental Health, Bethesda, MD, United States, 7Siemens Medical Solutions USA, Los Angeles, CA, United States, 8Siemens Healthcare, Sydney, Australia

In this work, a highly accelerated 3D EPI prototype sequence implementation and scanner in-line reconstruction are introduced. The proposed sequence provides a flexible combination of single-/multi-shot schemes, in-plane segmentation, image resolution, echo-train length, partial Fourier factors, 2D-CAIPIRINHA/2D-GRAPPA-based acceleration, and CAIPIRINHA shift. Initial tests presented herein indicate suitability for highly accelerated high-resolution susceptibility-based imaging with significantly reduced scan time, such as whole-head coverage at 0.65 mm isotropic resolution within 2 minutes.

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