FIG. 7.
In vivo kSPA reconstruction for spiral sampling with under-sampling factors up to 4. The first row shows a typical image from one coil element reconstructed with gridding. In the cases of un-dersampling, images are severely distorted. The second row shows the corresponding images reconstructed using the kSPA algorithm. The parameters are ws = 8, w = 7, and wb = 5. As a comparison, images reconstructed with the iterative SENSE algorithm is shown in the third row. The difference images between kSPA and iterative SENSE are shown in the bottom row. The image quality of kSPA is comparable to that of iterative SENSE.