CT Scans in Art Work Appraisal

Figure 9

A. Digital X-ray film of a sandstone Brahma god (40 cm) which shows a central metal rod inserted between the four-faced head and the body.

B. CT: a thin frontal section which, unlike the X-ray film, exposes two tricks used in its construction: firstly, the head has not been carved from the same stone as the body, and secondly, as is shown by the pale border which is thicker at the hips and thighs, the lower part of the sculpture was probably artificially oxidized by immersion in a corrosive solution to give it the appearance of an antique object.