Multi-slice ultrafast spatiotemporal encoding (SPEN) MRI by new two dimensional excitation pulses
Rita Schmidt 1 and Lucio Frydman 1
Chemical Physics, Weizmann Institute of
Science, Rehovot, Israel
Two-dimensional (2D) excitation pulses are often used
for localization in spectroscopic imaging and for
in-plane region-of-interest delineation in MRI. Recent
research has shown that these RF manipulations can also
be based on spatiotemporal encoding (SPEN) principles.
SPEN is a spatiotemporal manipulation that has also been
used for single-shot ultrafast MRI. Fast volumetric SPEN
MRI acquisitions, however, are still challenged. The
present work merges the benefits of both 2D SPEN-based
excitation and 2D SPEN single-shot acquisitions,
demonstrating a multi-slice ultrafast sequence.
Experiments testing these ideas were demonstrated on
phantom as well as on brain volunteer imaging
experiments at 3 T.
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