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Abstract #4630

PAREWISE:  High-bandwidth, reduced-rephase, slice-selective excitation pulses for high-field spectroscopy

James B Murdoch1

1Canon Medical Research USA, Mayfield Village, OH, United States

To meet the localization needs of high-field spectroscopy, new high-bandwidth computer-optimized RF excitation pulses have been generated, featuring phase modulation, t=0 points near the end of the pulse duration, B1 insensitivity over a ±15% range, and sharp excitation profiles. In the design process, a maximum amplitude of 1 kHz was imposed, and bandwidth was increased by stepping up the pulse length from 5 to 11 ms. Both 90° and 60° flip angles have been investigated thus far.

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