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Abstract #1231

A High Resolution Gradient-Echo/Spin-Echo EPI Sequence for Vessel Architecture Imaging

Ke Zhang1,2, Seong Dae Yun3, Simon M.F. Triphan4, Volker J. Sturm1,2, Lukas R. Buschle1,2, Artur Hahn2, Sabine Heiland2, Martin Bendszus2, Heinz-Peter Schlemmer1, N. Jon Shah3,5, Christian H. Ziener1,2, and Felix T. Kurz1,2

1Department of Radiology, German Cancer Research Center, Heidelberg, Germany, 2Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany, 3Institute of Neuroscience and Medicine – 4, Medical Imaging Physics, Forschungszentrum Jülich, Jülich, Germany, 4Department of Diagnostic & Interventional Radiology, German Cancer Research Center, Heidelberg, Germany, 5Department of Neurology, Faculty of Medicine, JARA, RWTH Aachen University, Aachen, Germany

To obtain vessel architectural imaging (VAI), a dual gradient-echo/spin-echo EPI sequence is needed to simultaneously track the dynamic signal changes in both gradient echo and spin echo contrasts. However, brain coverage and in-plane matrix size in previous brain studies were limited. In this study, the multiband excitation and blipped-CAIPI techniques were applied to improve the slice coverage. To enhance the in-plane resolution, two rephasing gradients were inserted after the GE readout, to return the data acquisition to the k-space center before the SE readout and enable parallel imaging techniques.

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