Respiratory Motion Correction for Compressively Sampled Free Breathing Cardiac MRI Using Smooth -Norm Approximation

Figure 4

Comparison of recovered images with and without respiratory motion estimation for clinical data: frames diastolic, middle of diastolic and systolic, and systolic (left to right). (a) Gold standard images from full k-space data. (b) ROI. (c) Reconstruction using the proposed technique (CS + MEMC) at . (d) Difference between estimated images (c) and (b). (e) Reconstruction using the proposed technique (CS + MEMC) at . (f) Difference between estimated images (e) and (b). (g) Reconstruction with CS + no MEMC at . (h) Difference between estimated images (g) and (b). (i) Reconstruction CS + no MEMC at . (j) Difference between estimated images (i) and (b).