CT Scans in Art Work Appraisal
A. Digital X-ray film of another Khmer head, Cambodia, 13th century. Sandstone, 19 cm. There seems to be an anomaly on the forehead.
B. CT: opaque 3D view.
C. CT: the same 3D view, after modification of the display of visible densities, reveals a fake repair of damage to the right eye and forehead.
D. CT: the same 3D view, once the sandstone has been rendered translucent, reveals that, in fact, those repairs have not been made with the original stone. The restoration has been done with fragments of a different type of stone. The black dots indicate iron oxide nodules.