1. An apparatus for establishing workspace coordinates for features of a medical workspace including a patient's body region, the apparatus comprising: a first camera and a second camera calibrated to each other and the medical workspace and positioned relative to the medical workspace, the first and second cameras having respective first and second sightlines of the medical workspace, the first and second sightlines being arranged at an angle and the first and second cameras being capable of producing workspace images of the medical workspace; and a computer in communication with the first and second cameras, the computer configured to establish a workspace coordinate framework of the medical workspace, receive information relating to the workspace images, receive a set of scan coordinates of a scan image in a scan coordinate framework, the scan image having identifiable features, align the scan coordinate framework with the workspace coordinate framework, and determine workspace coordinates of the identifiable features.