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Abstract #3836

Minimum-Duration Parallel Transmit Pulses for Simultaneous Multislice Imaging

Mihir Pendse1 and Brian K Rutt1

1Stanford University, Stanford, CA, United States

We describe a procedure for obtaining minimum duration parallel transmit pulses for simultaneous multislice imaging. The strategy involves a combination of the IMPULSE parallel transmit pulse design algorithm for mitigating local SAR hotspots and enforcing flip angle homogeneity; an optimal control algorithm for intelligent design of slice selective subpulse shape with minimum power; and time-optimal VERSE for reducing peak power with minimum increase in pulse duration. Results indicate a reduction in pulse duration by a factor of 4.9 compared to a pTx-SMS pulse designed with conventional techniques.

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