Reconstruction is performed on undersampled fMRI data on three radial sampling patterns of 6, 12, and 24 radial lines.
We used three radial sampling patterns with different acceleration factors for testing reconstruction performance: 6 radial lines, 12 radial lines, and 24 radial lines as described in [39].
In this paper, we study digital control systems with non-uniform updating and sampling patterns, which include multirate sampled-data systems as special cases.
In addition, we discuss the fuzzy k-means sampling, response surface sampling, and Kennard-Stone sampling, which optimize sampling patterns in a feature space.
This is to note that we have illustrated undersampling of fMRI data by retrospective sampling on the Cartesian grid because it allows sampling patterns to maintain incoherency among the columns of matrix X [39, 40, 41].
Orbital sampling patterns around a single GPS waypoint exhibited high positional accuracy and sampling efficiencies.
It is imperative to obey such hardware and safety constraints to achieve the successful integration of CS sampling patterns with fast imaging pulse sequences.
In addition, the k-space sampling patterns in both cases contributed toward the observed reduction in Emax against calculated values, albeit for different reasons.
If coalescence is fast relative to the rate at which sampling occurs, then the resulting genealogy will appear ladder-like and spindly, while if coalescence is slow relative to sampling patterns, then the resulting genealogy will appear dense and bushy.
Visually the image contrast and resolution were well preserved for CS reconstructed images from all sampling patterns compared to the original baseline image) and downsampled baseline image with only k-space low-frequency information).
Representative results from CS reconstruction of PatternGRC1 using Algorithms 1 and 2 are shown in Figures 12, 13, 14, and 15, and similar results were obtained regardless of acquisition method and sampling patterns.
