1. An anatomical feature condition assessment system, comprising: an acquisition processor for acquiring data representing velocity and direction measurements of individual segments of an anatomical feature of a patient; a repository of mapping data associating averaged velocity and direction measurements within a predetermined particular segment of said anatomical feature with a set of values; and a data processor for averaging said acquired velocity and direction measurements within said predetermined particular segment of said anatomical feature and using said mapping data to identify a set of values associated with said averaged acquired velocity and direction measurements and using said identified set of values to derive an assessment of the condition of the anatomical feature of the patient.