Elimination of Motion Artifacts in Magnetic Resonance Imaging

Methods By analyzing the different features of read-out and phase-encoding axis motions,the different axis motion artifacts can be canceled by different algorithms in two steps.

There were obvious motion artifacts caused by the motions of eyeballs,pulsates of ce.

Objective To explore a method that restrain and dispel motion artifacts of MRI examination for better image quality and higher working efficiency.

Multishot PROPELLER (periodically rotated overlapping parallel lines with enhanced reconstruction) approach, a self-navigation fast spin echo technique, is effective in suppression motion artifacts using segmental phase corrections and oversampling at the central k-space.

Results:Compared with the unsorted CT data the motion artifacts in resorted CT data reduced a lot.

The study of spiral CT for the relative rotation of atlantoaxial joint and its clinical significance;

Cretaceous Paleomagnetism of the Northeast China and Adjacent Regions and the Geodynamic Setting of Block Rotations

The GPS velocity fields are estimated and used to estimate the North China sub-plate and its intra-block rotation motions.