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Abstract #2925

A Fast B1 Mapping Method for Transmit/Receive Coils for Parallel Transmit (PTx) Applications

Tiejun Zhao1, Hai Zheng2, Anthony DeFranco3, Tamer Ibrahim2,3, Yongxian Qian3, Fernando Boada2,3

1Siemens Healthcare, Siemens Medical Solutions, Pittsburgh, PA, United States; 2Bioengineering, University of Pittsburgh, Pittsburgh, PA, United States; 3Radiology, University of Pittsburgh, Pittsburgh, PA, United States

For a successful parallel transmit experiment, the B1 map must be known for each Tx channel. As the number of the transmit channel increases, the total scan time of B1 mapping could increase significantly. In light of this, there is a tremendous motivation to find a fast B1 mapping method for pTx applications in the recent years. In this abstract, we proposed and demonstrated a fast technique to estimate B1+ map for pTx experiments using only a set of small tip angle images, which can be obtained under 2min for a 8-channel Tx/Rx coil with whole brain coverage.