FIGURE 2.

Multi‐slice 2D aMRI vs volumetric 2D aMRI. Anatomical reference (A), and maximum difference maps of the original (unamplified) 3D cine data (B), multi‐slice 2D aMRI (C), and volumetric 2D aMRI (D). Multi‐slice 2D aMRI contains more motion artifacts (red arrows) than volumetric 2D aMRI. Motion artifacts can still be seen in volumetric 2D aMRI (red arrow), because 2D aMRI does not amplify in‐ and out‐of‐plane motion. Here, the heart rate temporal frequency (±0.1) motion was amplified with an amplification parameter of 25 and an amplitude‐weighted Gaussian smoothing with $\sigma =5$, while attenuating the motion related to all other temporal frequencies