Research Article

Fast Compressed Sensing MRI Based on Complex Double-Density Dual-Tree Discrete Wavelet Transform

Figure 5

Reconstructed results of Shepp-Logan phantom images using Gaussian random mask (a–d) and radial mask (e–h) with a 20% sampling ratio among different approaches. (a) Gaussian random sampling mask, (b) and (f) FISTA-DWT, (c) and (g) FISTA-CDT, (d) and (h) FISTA-CDDDT, and (e) radial sampling mask.