Adam B. Kerr1,
Peder E.Z. Larson2, Daniel B. Vigneron2, John M. Pauly1
1Electrical
Engineering, Stanford University, Stanford, CA, United States; 2Radiology,
UCSF, San Francisco, CA, United States
A novel approach for designing multiband spectral-spatial RF pulses with complex spectral profile specifications is described. Example RF pulses for application to C-13 imaging are presented and experimentally validated. The complex profile capability is also exploited to achieve a 20% reduction in the peak B1 required by a complex-phase spectral-spatial pulse compared to its linear-phase analog by optimizing the phase for each spectral band.