MR elastography is increasingly being applied to thin or small structures in which wave propagation is dominated by waveguide effects, which can bias stiffness results with common processing approaches. Finite element simulations of a realistic cardiac geometry were used to investigate the importance of waveguide effects, and to study the ability of the curl operator to remove these effects. The results establish that waveguide effects in a cardiac geometry can strongly bias stiffness results, but can be correctly handled by application of the curl operator to the measured displacement field, followed by true 3D inversion.
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