A probe (20) generates a plurality of image volumes (13i, 13j) of an anatomical object (10) within a coordinate system (11) and an imaging device (21) generates imaging data (22) representative of the image volumes (13i, 13j) of the anatomical object (10). A position sensor (30) is attached to the probe (20), and a tracking device (31) generates tracking data (22) representative of a tracking of the position sensor (30) within the coordinate system (11). A registration device (40) executes a validation testing of a calibration matrix (51) associated with a spatial relationship between the image volumes (13i, 13j) and the position sensor (30). The validation testing includes a testing of an absolute differential between an image based volume motion (VMIB) and a tracking based volume motion (VMTB) relative to a calibration threshold (CT).
