Claudio Santelli1,
2, Johannes F.M. Schmidt2, Tobias Schaeffter1,
Sebastian Kozerke, 12
1Imaging
Sciences and Biomedical Engineering, Kings College London, London, United
Kingdom; 2Institute for Biomedical Engineering, University and ETH
Zurich, Zurich, Switzerland
Scan acceleration and motion compensating techniques are invaluable to reduce acquisition times and breathing artifacts in cardiac imaging. Respiratory motion compensation with navigator based gating or breathholding is widely used, but may be limited in non-compliant patients. In this work, the SPIRiT reconstruction framework is extended by incorporating linear motion operators into the signal model allowing for scanning during the entire breathing cycle in cardiac imaging. Simulation and in-vivo phase-contrast data demonstrate the benefits of the technique: Results show reduction in blurring artifacts for magnitude and velocity induced phase.