Free-breathing continuous acquisitions, so called free-running, enable 3D whole-heart coverage for motion-resolved functional cardiac MRI. In prior work approaches based on 3D radial imaging were proposed for this task. However, free-running 3D radial image reconstruction is computationally demanding. In this work, we propose a novel 3D Cartesian free-running bSSFP sequence. Data is acquired continuously with a variable-density Cartesian trajectory with spiral profile order and retrospectively binned based on respiratory self-navigation and cardiac ECG signal synchronization. A multi-bin-PROST reconstruction is proposed to exploit spatial, cardiac and respiratory temporal redundancies to reconstruct high-resolution images.
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