Improved - PCA Algorithm Using Artificial Sparsity in Dynamic MRI

Figure 7

The 4-fold accelerated in vivo results at the selected frames and the corresponding absolute error maps are shown in the following rows, reconstructed by traditional, residual, and sparse - PCA approaches. The reconstructed images are shown in the same intensity scale, and the error maps are scaled twofold for better visualization. The reference images are reconstructed by applying FFT for fully sampled data.