Julia V. Velikina1, Kevin M. Johnson1,
Walter F. Block1, Alexey A. Samsonov1
1University of Wisconsin - Madison,
Madison, WI, United States
We
present a novel temporally constrained method for reconstruction of dynamic
MRI images from undersampled data using second temporal difference. The
proposed method is compared to the previously described temporal compressed
sensing approaches, including k-t FOCUSS. Performance comparison is done in a
series of experiments in digital phantoms and in vivo human volunteer data
for phase contrast and contrast-enhanced imaging. The proposed method
provided higher accuracy of flow waveform estimations for acceleration
factors 8-13.
Keywords