A VERSE Algorithm with Additional Acoustic Noise Constraints

Sebastian Schmitter¹, Marco Mueller¹, Wolfhard Semmler¹, Michael Bock¹

In this work a general VERSE algorithm is presented, that reduces both the B1 amplitude (and thus SAR) and the acoustic noise of the gradient for arbitrary RF pulses. The resonance frequencies of the gradient coils are additional constraints in this algorithm. The Fourier transform of the VERSE gradient shape is adapted to these resonance frequencies. The method is demonstrated for SINC rf pulses. A noise reduction of more than 13 dB compared to non-optimized VERSE pulses is measured, whereas the effects of the VERSE algorithm on the slice profile is negligible.