Plug and Play Parallel Transmission at 7 and 9.4 Tesla based on Principles from MR Fingerprinting

Parallel transmission (PTX) is often proposed as a framework for transmit non-uniformity mitigation in ultra high field MRI. However, routine application of PTX has hitherto been hampered by technical challenges. In particular, optimal performance is contingent on subject-specific transmit-sensitivity maps and tailored RF-pulses, which impede the workflow and increase the duration of the exam. In this work we demonstrate a novel approach to transmit non-uniformity mitigation inspired by the recently proposed MR Fingerprinting method that enables simultaneous quantitative mapping of the T1 relaxation and an array of transmit-sensitivity profiles without prior calibration scans or tailored RF-pulses in less than 15seconds.

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