The Variable-rate
Selective Excitation (VERSE) approach allows to achieve very short echo time in 2D-UTE sequences when applied on a selective half-pulse and its paired slice selection gradient. Unfortunately, the latter may suffer from non-linearities and eddy current effects, all the more important on preclinical scanners equipped with strong gradient systems.
An efficient method was implemented on a 7T preclinical scanner to measure the real slice selection gradient profile. A reshaping of the corresponding pulse was made, improving the slice selectivity.
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