Abstract #4413

Simultaneous Bloch Siegert B1+ & T2 Mapping in One Experiment using a Multi Spin Echo Sequence

Volker Sturm¹, Thomas Christian Basse-Lsebrink^1,2, Thomas Kampf¹, Guido Stoll², Peter Michael Jakob¹

¹Experimental Physics 5, University of Wrzburg, Wrzburg, Germany; ²Neurology, University of Wrzburg, Wrzburg, Germany

A novel method for B₁⁺ mapping based on the Bloch-Siegert (BLS) shift was recently introduced. BLS-based B₁⁺ mapping employs off-resonant pulses before signal acquisition to encode B₁ information into the signal phase. In the present study, BLS B₁⁺ mapping was extended to CPMG-based Multi-Spin-Echo (MSE). Through only one experiment, this method simultaneously provides the data needed for B₁⁺ mapping with the data necessary for T₂-quantification. Ex vivo phantom and in vivo experiments were performed to investigate the proposed method.