Bhairav B. Mehta1,
Xiao Chen1, Christopher M. Kramer2, 3,
Michael Salerno1, 2, Frederick H. Epstein1,
3
1Department
of Biomedical Engineering, University of Virginia, Charlottesville, VA,
United States; 2Department of Medicine, Cardiology Division University
of Virginia, Charlottesville, VA, United States; 3Department of
Radiology, University of Virginia, Charlottesville, VA, United States
MOLLI has limited spatial resolution because of its breathhold constraint. Higher spatial resolution may improve T1-mapping of thin structures. The ANGIE sequence uses navigator gating to remove the breathhold constraint and CS to accelerate data acquisition. For high-quality CS reconstruction, the sampling pattern should be incoherent, and to minimize scan time, a stopping criterion should be based on image quality and T1 estimation. We developed an ANGIE sequence that adapts to navigator rejection of data by recalculating, in real-time, a sampling pattern that is well-suited for CS, and halts data acquisition when data are sufficient for CS reconstruction and precise T1 estimation.
Keywords