X-ray 3D computed tomography of large objects: investigation of an ancient globe created by Vincenzo Coronelli
2007
X-ray cone-beam Computed Tomography is a powerful tool for the non-destructive investigation of the inner structure
of works of art. With regard to Cultural Heritage conservation, different kinds of objects have to be inspected in order to
acquire significant information such as the manufacturing technique or the presence of defects and damages. The
knowledge of these features is very useful for determining adequate maintenance and restoration procedures. The use of
medical CT scanners gives good results only when the investigated objects have size and density similar to those of the
human body, however this requirement is not always fulfilled in Cultural Heritage diagnostics. For this reason a system
for Digital Radiography and Computed Tomography of large objects, especially works of art, has been recently
developed by researchers of the Physics Department of the University of Bologna. The design of the system is very
different from any commercial available CT machine. The system consists of a 200 kVp X-ray source, a detector and a
motorized mechanical structure for moving the detector and the object in order to collect the required number of
radiographic projections. The detector is made up of a 450x450 mm 2 structured CsI(Tl) scintillating screen, optically
coupled to a CCD camera. In this paper we will present the results of the tomographic investigation recently performed
on an ancient globe, created by the famous cosmographer, cartographer and encyclopedist Vincenzo Coronelli.
Keywords:
- Correction
- Source
- Cite
- Save
- Machine Reading By IdeaReader
0
References
7
Citations
NaN
KQI