Plug and Play Parallel Transmission at 7 and 9.4 Tesla based on Principles from MR Fingerprinting
Martijn A Cloos 1 , Christopher Wiggins 2 , Graham Wiggins 1 , and Dan Sodickson 1
NYU Langone Medical Center, New York, NY,
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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