Meeting Banner
Abstract #2394

Multiband arbitrary-phase SLR RF pulse with generalized flip angle via convex optimization

Hong Shang 1,2 , Peder E.Z. Larson 1,2 , Adam B. Kerr 3 , Galen Reed 4 , Adam Elkhaled 1,2 , Jeremy W. Gordon 1 , Cornelius von Morze 1 , Michael Lustig 5 , and Daniel B. Vigneron 1

1 Radiology and Biomedical Imaging, UCSF, San Francisco, California, United States, 2 UCSF-UC Berkeley Graduate Program in Bioengineering, San Francisco/Berkeley, California, United States, 3 Electrical Engineering, Stanford University, Stanford, California, United States, 4 HeartVista, Menlo Park, California, United States, 5 Electrical Engineering and Computer Science, UC Berkeley, Berkeley, California, United States

A framework for general RF pulse design is developed based on convex optimization. It can create an RF pulse with multiband magnitude profile, arbitrary phase profile and generalized flip angle. Spectral profile sparsity is exploited to further optimize pulse characteristics such as duration, transition width and SAR with flexible trade-off among them. Designs for specialized excitation RF pulses for balanced SSFP C-13 MRI and a dualband saturation RF pulse for H-1 MR spectroscopy were developed and tested.

This abstract and the presentation materials are available to members only; a login is required.

Join Here