Fast Structural Brain Imaging using an MDEFT Sequence with a FLASH-EPI Hybrid Readout
Institute of Neurology
A sequence for the fast acquisition of T1 weighted structural brain images with whole brain coverage and isotropic resolution of 1 mm is presented. The sequence is based on MDEFT with a FLASH-EPI hybrid readout. Several techniques for artefact suppression are implemented, like echo time shifting, asymmetric k-space sampling, and navigator echo acquisition. It is shown experimentally that the hybrid MDEFT sequence with a total duration of 8 min yields the same signal-to-noise and contrast-to-noise ratios as a 12 min MDEFT sequence based on a standard FLASH readout.