A Self-navigated Spiral In & Out Pulse Sequence Design for Retrospective Motion Correction
Liu C, Aksoy M, Moseley M, Bammer R
A new spiral sequence design is proposed for retrospective correction of in-planar rigid body motion. The sequence uses a spiral-in section at the beginning of each interleaf to acquire a low resolution image to be used for retrospective detection and correction of motion. Due to the undersampling artifacts that appear during motion correction and reconstruction, parallel imaging methods provide significant increase in image quality. The results of in vivo studies including no motion and mild motion are presented.