Fast Reconstruction for RF Monitored Sweep Imaging with Sideband Excitation

David Otto Brunner¹, Benjamin E. Dietrich¹, Matteo Pavan¹, Klaas P. Pruessmann¹

Pulsed NMR spectroscopy and imaging using stochastic1 or swept2 excitation during signal acquisition requires sets high requirements on the transmit chain in order to accurately deconvolve the received signal. Monitoring the RF pulse concurrently with the acquisition alleviates many of those requirements, however the computational effort is increased in particular if other confounding, such as propagation delay differences or temporally variable off-resonances need to be corrected. We present a fast FFT based reconstruction approach which is applied to SWIFT imaging using sideband excitation showing the benefits of the applied corrections.