Abstract #3778
A hexagonal spoiler gradient scheme improves the transition to steady state in spoiled gradient echo sequences
Aaron T Hess 1 and Matthew D Robson 1
1
Oxford Centre for Clinical Magnetic
Resonance Research (OCMR), Oxford, Ox, United Kingdom
When acquired spoiled gradient echo images at flip
angles significantly larger than the Ernst angel, the
transition to the steady state may not be smooth as
predicted by the theoretical signal equations but can
oscillate causing artefacts in images. A novel six point
spoiling scheme is proposed that minimizes the number of
unwanted echoes refocused and ensure that refocused
echoes are return to the center of k-space which intern
enables the use of RF-spoiling to further remove their
effect. This technique is found to improve the approach
to steady state compared to using a constant gradient
with RF spoiling.
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