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Abstract #2458

Motion Correction of a New T1-W Propeller Sequence (SE-Prop)

Stefan Skare1

1Dept of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden

A new propeller sequence is presented for motion-robust imaging with T1-w contrast, SE-prop. In SE-prop, the core sequence is the same as the Cartesian Spin-Echo, with one phase encoding line of a given blade read out per TR. While motion between the blades can be corrected using image realignment similar to other propeller sequences, motion may now also occur within a blade. Means to overcome this is presented.

Keywords

acquiring acquisition addition additional addressed among angularly applied applying artifacts attempting became blade blades blue body brain channel choice classical clinical coil coming common compensation contrast corrected correction council damaged dashed dept developed differently diffusion double earlier easy effectively encoding encountered entropy error established estimation excitation fairly final fitting five flair flow fold footprint free freq ghosting good gridded handle head healthy hence highest identical identification identify illustrate implement inconsistencies index instead instructed inter interleaved intervals intra inversion kernel known leading lowest makes manner metric model motion move much next optional orientation overall overcome panel parallel part partly periods pipe post potential previously process prop propeller proposed published pulse random rather reasonable recently reconstruction reduced reflects rejecting rejection removed repair resolution rigid robust scanner sensitive separated slice slices smallest sometimes sorted space spin squares stack steps subject subset suggested supported synthesize temporal temporally thereby tissue trajectories trajectory transformation undesired volunteer whole