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Peer-Reviewed Publication
J Magn Reson2016;26281-90.January 1, 2016Journal Article

Multiband RF pulses with improved performance via convex optimization.

Hong Shang1, Peder E Z Larson2, Adam Kerr3, Galen Reed4, Subramaniam Sukumar5, Adam Elkhaled2, Jeremy W Gordon5, Michael A Ohliger5, John M Pauly3, Michael Lustig6, Daniel B Vigneron2
1Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco and University of California, Berkeley, CA, USA. Electronic address: shanghong@berkeley.edu.
2Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA; UC Berkeley-UCSF Graduate Program in Bioengineering, University of California, San Francisco and University of California, Berkeley, CA, USA.
3Electrical Engineering, Stanford University, Stanford, CA, USA.
4HeartVista, Menlo Park, CA, USA.
5Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, USA.
6Electrical Engineering and Computer Science, University of California, Berkeley, CA, USA.

Abstract

Selective RF pulses are commonly designed with the desired profile as a low pass filter frequency response. However, for many MRI and NMR applications, the spectrum is sparse with signals existing at a few discrete resonant frequencies. By specifying a multiband profile and releasing the constraint on "don't-care" regions, the RF pulse performance can be improved to enable a shorter duration, shar…

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