X-ray examination provides information on the construction and the assemby (e.g. presence of nails, burrows caused by woodworm infection, type of joints) as well as on the presence of previous damage and restoration treatment. X-ray examination can also yield information about the artist's painting technique.
X-ray Detail of an icon probably dating from the 18th century.
Here the preparatory sketching made by the artist is revealed under X-ray scrutiny. The diagonal lines intersecting in the middle of the painting and serving to centre the subject are clearly visible and provide information on the composition techniques used.
X-ray The two X-rays, shown at right top and bottom reveal information about the history of the restoration of the painting. Above, the X-ray shows the presence of an angel beneath the red drapery. On both X-rats, nails fixing a wooden lath, probably an addition, are visible. The X-ray shown at right bottom also indicates the presence of a metal plate that was added on the back to keep the wooden boards of the support together.