Prolonged acquisition time and susceptibility to respiratory motion remain to be the major challenge in 3D free-breathing whole-heart MR angiography. Recently, respiratory self-navigated 3D-Radial CMRA technique has been proposed to address the said limitations. In this technique, a 1-D projection oriented in Superior-Inferior direction are acquired at every heartbeat before each interleave of 3D-Radial imaging data for 1D motion correction of the heart with 100% respiratory gating efficiency. In this work, an extension of this method is proposed to estimate and correct for the 3D motion of the heart along with a robust navigator processing and automatic coil selection algorithm (3D-PRONAV). The proposed method is validated in five volunteers.
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