Keywords: Pulse Sequence Design, Cardiovascular
Motivation: Designing optimal gradient waveforms is a convex problem. They must satisfy gradient hardware constraints, physiological constraints, and being time-optimal.
Goal(s): By shortening TE, we are more robust to motion artifact and less vulnerable to field inhomogeneities. By shortening TR and consequently TA, we can potentially minimize banding artifacts and obtain shorter scan time, increasing motion artifact robustness.
Approach: The gradient optimized method “GrOpt” was integrated directly into free-running 3D-radial-bSSFP and GRE acquisitions at 3T
Results: We achieved 14.0 %, 5.7% and 5.4% reduction in TE, TR and TA for bSSFP and 25.1%, 6.6% and 6.5% reduction in TE, TR and TA for GRE, .
Impact: In 3D-radial-bSSFP, CVX achieves 14.0%, 5.7% and 5.4% reduction in TE, TR and TA, respectively. In 3D-radial-GRE, 25.1%, 6.6% and 6.5% reduction in TE, TR and TA was obtained, reducing the effect of inhomogeneities, motions, eddy current and scan time.
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