Abstract: A car locator is provided having a base for attaching the locator to a car. A cantilevered support rod is pivotally connected with the base to permit pivotal movement and positioning of the rod relative to the base. A hollow marking sleeve having an outer transparent tube and an inner fluorescent liner disposed within the tube slidably mounts onto the support rod for marking the car. The sleeve engages the support rod with sufficient contact force to retain the sleeve in position on the support rod. The sleeve is slidably removable from the support rod so that the sleeve may be pulled from the support rod.

Abstract: A computer system and a computer-implemented method are provided for interactively displaying a three-dimensional rendering of a structure having a lumen and for indicating regions of abnormal wall structure. A three-dimensional volume of data is formed from a series of two-dimensional images representing at least one physical property associated with the three-dimensional structure. An isosurface of a selected region of interest is created by a computer from the volume of data based on a selected value or values of a physical property representing the selected region of interest. A wireframe model of the isosurface is generated by the computer wherein the wireframe model includes a plurality of vertices. The vertices of the wireframe model are then grouped into populations of contiguous vertices having a characteristic indicating abnormal wall structure by the computer.