Keywords: Artifacts, Motion CorrectionMulti-echo gradient-echo imaging is known to be affected by temporally varying B0 effects, including B0 drifts and respiratory motion-induced B0 fluctuations. The radial stack-of-stars trajectory enables the oversampling of the k-space center and has been previously employed for B0-navigation without the consideration of fat. The present work develops a methodology for Dixon-based B0-navigation to correct for B0 drift and B0 fluctuations in stack-of-stars multi-echo gradient-echo imaging for body imaging. Simulations and in vivo measurements show the advantage of the Dixon-based B0-navigation in correcting quantification errors in proton density fat fraction, T2* and field-map, when using stack-of-stars multi-echo gradient-echo acquisitions.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Keywords