1. An optical coherence tomography (OCT) system having a configuration that: scans a physical object, which has a surface and a depth, with a beam of light that has a beam width and a direction; acquires OCT signals from the scan; forms at least one B-scan cluster set using the acquired OCT signals such that: each B-scan cluster set includes at least two B-scan clusters; each B-scan cluster includes at least two B-scans; the B-scans within each B-scan cluster set are parallel to one another and parallel to the direction of the beam of light; each B-scan, each B-scan cluster, and each B-scan cluster set are formed at a different time than all other B-scans, B-scan clusters, and B-scan cluster sets, respectively; each B-scan within each B-scan cluster is separated from any next formed B-scan within that B-scan cluster by a distance (“intra-cluster distance”) in the range of 0 to half of the beam width; the last formed B-scan within each B-scan cluster is separated from the first formed B-scan within any next formed B-scan cluster (“inter-cluster distance”) by at least one micrometer; and uses all or a fraction of the B-scans within each B-scan cluster set to calculate OCT motion contrast for each B-scan cluster set; and registers the calculated OCT motion contrast as the OCT motion contrast of one of the B-scan clusters within each B-scan cluster set.