Meeting Banner
Abstract #1892

Reduced peak power in paired excitation and refocusing multiband pulses by quadratic phase modulation in the spatial domain

David G Norris1,2 and Jenni Schulz1

1Donders Institute for Brain Cognition and Behaviour, Radboud University Nijmegen, Nijmegen, Netherlands, 2Erwin L Hahn Institute, University Duisburg Essen, Essen, Germany

This abstract describes the use of pulses that have a quadratic phase profile in the spatial dimension for simultaneous multi-slice imaging. The quadratic profile reduces the peak voltage needed by an amount dependent on the number of simultaneously excited slices. The pulses have to be used as an excitation-refocusing pair, with the refocusing pulse having half the phase gradient. The echoes from each slice are simultaneously refocused and there are no additional constraints on the pulse duration.

This abstract and the presentation materials are available to members only; a login is required.

Join Here