Echo planar imaging (EPI) is widely used
clinically for its speed, but is known to be sensitive to non-idealities like
B0 field inhomogeneity, eddy currents, and gradient nonlinearity. Such
non-idealities are not typically managed during image reconstruction, resulting
in geometrically distorted images. Post-processing corrections (e.g., image-based
interpolation) usually tend to degrade resolution. In this work, a
comprehensive model-based reconstruction framework that prospectively and
simultaneously accounts for non-idealities in accelerated single-shot EPI
acquisitions is proposed. Sparsity regularization is also incorporated to
mitigate noise amplification. The proposed algorithm is demonstrated on
brain MRI data acquired on a compact 3T MRI system.
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