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Simultaneous multislice imaging with slice-multiplexed RF pulses

✍ Scribed by K.J. Lee; J.M. Wild; P.D. Griffiths; M.N.J. Paley

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
687 KB
Volume
54
Category
Article
ISSN
0740-3194

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✦ Synopsis

Abstract

A method for simultaneous multislice imaging is presented that uses a multislice RF pulse that imparts a different linear phase profile to each slice. During readout, slices are unaliased by using extra slice‐select gradient lobes, which rephase and dephase individual slices one at a time. Compared to other simultaneous slice methods, this method avoids distortion by slice‐select gradients, and does not require extra views or additional hardware. However, because one echo per slice is required, the method requires a longer read period. This can cause non‐ideal rephasing of the individual slices due to susceptibility gradients, which manifests itself as crosstalk between slices. There is also a concomitant increase in the minimum TR of the sequence. The method is demonstrated with phantom and in vivo images using gradient‐echo and spin‐echo versions. Magn Reson Med, 2005. © 2005 Wiley‐Liss, Inc.

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