At ultra-high field, the use of parallel transmit (pTx) kT-point RF pulses can greatly improve the excitation uniformity of non-selective radiofrequency pulses but this approach generally requires additional pre-scans to map subject-specific transmit field sensitivities and compute optimal waveforms thereupon. Alternatively, quasi-optimal RF pulses can be obtained by replacing subject-specific field maps by a so-called field database resulting from the accumulation of field maps acquired in a small cohort. This concept is validated here at 7 Tesla on the Nova 8Tx/32Rx head coil with the implementation of a MP-RAGE protocol integrating universal kT-point pTx pulses.
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