Abstract #1521
Comparing Group Sparse Reconstruction of 4D EP-COSI data with Compressed Sensing, Total Variation, and Maximum Entropy Reconstruction
Brian L Burns 1 , Neil Wilson 2 , and M Albert Thomas 1,2
1
Department of Biomedical Engineering, UCLA,
Los Angeles, CA, United States,
2
Department
of Biomedical Physics, UCLA, Los Angeles, CA, United
States
Scan times for the 4D EP-COSI pulse sequence can be
20-40 minutes depending on scan parameters. To reduce
these scans times to clinically acceptable levels
non-uniform under-sampling of the phase encoded
dimensions coupled with non-linear reconstruction can be
used to accelerate acquisition. This work compares the
reconstruction results of 4X and 8X phantom data from
Compressed Sensing, Total Variation, and Maximum Entropy
with Group Sparse reconstruction, a variant of
Compressed sensing that used a mixed 1-1,2 regularizer.
Group Sparse reconstruction with overlapping groupings
is shown to provide qualitatively and quantitatively
superior results to other methods tested.
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.
Click here for more information on becoming a member.
