  This article is intended to supplement our 2015 paper in Medical Physics
titled "Noise properties of CT images reconstructed by use of constrained
total-variation, data-discrepancy minimization", in which ordered subsets
methods were employed to perform total-variation constrained data-discrepancy
minimization for image reconstruction in X-ray computed tomography. Here we
provide details regarding implementation of the ordered subsets algorithms and
suggestions for selection of algorithm parameters. Detailed pseudo-code is
included for every algorithm implemented in the original manuscript.
