3D RECONSTRUCTION OF INNER STRUCTURE OF RADIOACTIVE SAMPLES UTILIZING GAMMA TOMOGRAPHY
Language English Country Great Britain, England Media print
Document type Journal Article
PubMed
31711226
DOI
10.1093/rpd/ncz211
PII: 5618732
Knihovny.cz E-resources
- MeSH
- Algorithms MeSH
- Diffusion MeSH
- Geology MeSH
- Tomography, Emission-Computed, Single-Photon * MeSH
- Silicon Dioxide MeSH
- Image Processing, Computer-Assisted methods MeSH
- Porosity MeSH
- Cobalt Radioisotopes MeSH
- Radiometry instrumentation methods MeSH
- Radon MeSH
- Scintillation Counting MeSH
- Software MeSH
- Models, Theoretical MeSH
- Tungsten MeSH
- Gamma Rays MeSH
- Imaging, Three-Dimensional * MeSH
- Publication type
- Journal Article MeSH
- Names of Substances
- granite MeSH Browser
- Silicon Dioxide MeSH
- Cobalt Radioisotopes MeSH
- Radon MeSH
- Tungsten MeSH
Unique 3D tomography apparatus was built and successfully tested in Research Centre Rez. The apparatus allows three-dimensional view into the interior of low-dimension radioactive samples with a diameter up to several tens of millimeters with a betterresolution then 1 mm3 and is designed to detect domains with different levels of radioactivity. Structural inhomogeneities such as cavities, cracks or regions with different chemical composition can be detected using this equipment. The SPECT scanner has been successfully tested on several samples composed of a 3-mm radionuclide source located eccentrically within homogeneous steel bushings. To detect fine cracks inside a small sample, an ultrafine scan of the sample was carried out in the course of 24 hours with a 0.5-mm longitudinal and transverse step and 18° angular step. The exact location and orientation of a fine crack artificially formed inside a sample has been detected.
Department of Physics of Materials Charles University Ke Karlovu 5 12116 Prague Czech Republic
Research Centre Rez Ltd Hlavní 130 250 68 Husinec Řež Czech Republic
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