Keywords: RF Pulse Design & Fields, Parallel Transmit & Multiband, TIAMO, 7T
Motivation: Ultra-high-field MRI is hindered by signal homogeneity issues due to non-uniform B1+ fields. While TIAMO improves image quality by using phase shim pairs, existing methods are incompatible with non-conventional RF coils, which are emerging in UHF imaging.
Goal(s): This study aimed to optimise TIAMO phase shim pairs for non-conventional RF coils to enhance signal homogeneity for UHF-MR.
Approach: We optimised phase shim using B1+ and B1- maps from various custom RF coils, and validated them on a 7T MR scanner.
Results: The optimisation led to significant improvements in image homogeneity, demonstrating the feasibility of extending TIAMO to non-conventional coils.
Impact: This abstract will allow the application of TIAMO on non-conventional RF coils (i.e. coils without a fixed phase increment between adjacent transmit channels) for 7T MR.
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