Easy Alignment, Automatic Registration Five bone equivalent rods intersect at 90 degree angles. These rods are visible in any image or slice for automatic registration of 2D/2D and 3D/3D matching and verification of isocenter position. Fast, Accurate Alignment Checks Establish mechanical stability of an image guidance system by verifying isocenter within 1 mm. A 6.4 mm sphere at the center of the phantom assists with virtual and physical graticule alignment checks. Test Integrated System Accuracy of: 3D Cone Beam registration (CBCT, OBI, XVI) systems MV/kV Isocentricity Lasers and Couch Table Adjustments Optical Guidance Systems Virtual and physical graticules