Comparison of Positron Emission Tomography and X-ray radiography for studies of physical processes in sandstone |
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| Authors: | Patrick Goethals Anneke Volkaert Patric Jacobs Staf Roels Jan Carmeliet |
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| Institution: | aSCKCEN, Boeretang 200, B-2400 Mol, Belgium;bFaculty of Veterinary Medicine, Salisburylaan 133, B-9820 Merelbeke, Belgium;cDepartment of Geology and Soil Science, Krijgslaan 281/S8, B-9000 Gent, Belgium;dLaboratory of Building Physics, Catholic University of Leuven, Kasteelpark Arenberg 51, B-3001 Leuven, Belgium |
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| Abstract: | The migration of moisture in cores of porous homogeneous sandstone of Ledian age (Belgian Eocene, Tertiary) is monitored with PET (Positron Emission Tomography) and micro-focus X-ray radiography. In the case of PET, a nuclear medical imaging technique, 55Co-EDTA (Ethylenediamine Tetraacetic acid) and R-18F were used as water-soluble tracers. The X-ray projection method has evolved from the better-known medical technique and allows a fast and accurate determination of the two-dimensional transient moisture content profiles. Results indicate that both techniques can deliver important information concerning physical processes in situ. |
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| Keywords: | Positron Emission Tomography PET X-ray radiography Moisture migration Belgian Ledian sandstone |
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