Meeting Banner
Abstract #4269

Fourier Domain Approximation for Bloch Siegert Shift

Esra Abaci Turk1, 2, Yusuf Ziya Ider1, Arif Sanli Ergun3, Ergin Atalar1, 2

1Electrical and Electronics Engineering Department, Bilkent University, Ankara, Turkey; 2National Magnetic Resonance Research Center (UMRAM), Ankara, Turkey; 3Electrical and Electronics Engineering Department, TOBB-University of Economics and Technology, Ankara, Turkey

In this study, a new simple Fourier domain based analytical expression is proposed for the Bloch-Siegert phase shift based B1 mapping method. With this new expression off- and on-resonance effects can be understood more easily due to the Fourier domain relation. It is shown that |B1+| can be obtained more accurately by the aid of this expression for short pulse durations and offset frequencies.