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Abstract #5328

Combined Crushers: Omitting Separate Crusher Gradients in the Twice-Refocused Spin Echo Diffusion MRI Sequence

Richard Buschbeck1, Seong Dae Yun1, Markus Zimmermann1, Ezequiel Farrher1, and N. Jon Shah1,2

1Institute of Neuroscience and Medicine - 4, J├╝lich Research Centre, Juelich, Germany, 2RWTH Aachen University, Faculty of Medicine, Department of Neurology, JARA, Aachen, Germany

A new method is proposed that allows for the omission of crusher gradients in the Twice-Refocused Spin Echo (TRSE) sequence. The proper spoiling of the unwanted signal pathways is achieved by modifying the amplitudes and durations of the diffusion gradients. Both the crusher moment as well as the desired diffusion weighting is eventually provided only by the diffusion gradients. This results in several advantages like shorter minimum TEs and higher SNRs, all of which can be beneficial in diffusion MRI.

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