Abstract
We present here a new eddy-current compensation method. A mathematical model of eddy-current fleld is introduced to calculate flrst order eddy-current distorted non-uniform sampling trajectory in k-space. Based on the computed k-space trajectory, compensated image is reconstructed using the gridding method. In addition, the model of eddy-current fleld can also be used to calculate zero order eddy-current induced additional phase to correct the phase of MRI signal before gridding reconstruction, as long as such phase correction is able to further improve qualities of reconstructed image. Initial experiment on a 0.3T permanent MRI system demonstrates that the proposed method is able to reconstruct FSE (fast spin-echo) images of similar qualities as those produced by conventional gradient pre-emphasis method. DOI: 10.2529/PIERS061006031452
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
