Christopher M Rank1, Sebastian Sauppe1, Thorsten Heußer1, Andreas Wetscherek1, and Marc Kachelrieß1
We propose a new method for 5D respiratory
and cardiac motion compensation (MoCo), which employs highly undersampled MR
data and thus requires acquisition times as low as 2 minutes. Radial MR data of
the thorax of three free-breathing patients were acquired. Respiratory and
cardiac motion vector fields were estimated allowing for 5D MoCo
reconstructions, which employ 100% of the measured raw data for reconstruction
of each combination of respiratory and cardiac phase. These 5D MoCo reconstructions
clearly resolve different combinations of respiratory and cardiac phases while achieving high temporal and spatial resolution as well
as low noise and artifact levels.
