Zhiyang Fu1,2, Maria I Altbach1,3, and Ali Bilgin1,2,3
1Department of Medical Imaging, University of Arizona, Tucson, AZ, United States, 2Department of Electrical and Computer Engineering, University of Arizona, Tucson, AZ, United States, 3Department of Biomedical Engineering, University of Arizona, Tucson, AZ, United States
1Department of Medical Imaging, University of Arizona, Tucson, AZ, United States, 2Department of Electrical and Computer Engineering, University of Arizona, Tucson, AZ, United States, 3Department of Biomedical Engineering, University of Arizona, Tucson, AZ, United States
In radial imaging, streaks due to gradient inhomogeneities can obscure pathology. We introduce a streak cancellation method which can be combined with iterative reconstructions and compares favorably with earlier methods as shown in in vivo abdominal experiments.
Figure 1: Illustration of CACTUS algorithm.
Figure 4: (a) T2 maps of two representative
subjects using locally low rank (LLR) only, LLR with once-pruning ACS, LLR with
twice-pruning ACS, and LLR with CACTUS;
(b) ROIs on the LLR T2 maps and (c) mean and standard deviation (in
parenthesis) of T2 values in millisecond within ROI. Rectangular
bounding boxes are placed on both arms for the estimation of interference array correlation statistics.
