Fig. 1

Model before registration—3D display. Landmark sequence numbers assigned to the reference and target volume tantalum beads implanted in the periacetabular skeleton. Isosurface display shows only the highly attenuating metal in the volumes
Model before registration—3D display. Landmark sequence numbers assigned to the reference and target volume tantalum beads implanted in the periacetabular skeleton. Isosurface display shows only the highly attenuating metal in the volumes