A heterogeneous integrated circuit having a digital signal processor and at least one programmable logic core. The method continues by determining access control information for the plurality of sets of encoded data slices. The tilted portion of the seal ring structure forms an obtuse angle with the first portion. Each offer variable window includes multiple bars. The computer is further programmed to generate an estimate of a reconstructed image, compensate the partial MR data set for the missing data, and reconstruct an MR image by iteratively minimizing the total squared difference between the k-space data of the estimate of the reconstructed image and the measured k-space data of the compensated partial MR data set.