CT Scans in Art Work Appraisal
A. Ekoi mask, Nigeria, 19th century. 26 cm.
B. CT: 3D views in which the structures of lower density than bone have been erased, revealing that the incisors of a carnivorous animal (1) have been inserted in the upper jaw of a human skull.
CT: a selection of thin axial sections which illustrate the
original technique used to make the mask: the nasal cartilage was replaced
by a piece of carved wood (2) and covered with antelope skin; the eye
sockets (3) were filled with cloth; the temporal fossae were filled
with clay (4) and sticks (5), finely carved to give the impression of
scarification, were inserted under the taut antelope skin. The articulated
wooden tongue is attached to the top of the wickerwork by a fiber ligature
(6). The cavity of the right frontal sinus is filled with a magic charge
(7), covered in turn by clay and antelope skin.