Measurement of attenuation coefficients and CT numbers of epoxy resin and epoxy-based Rhizophora spp particleboards in computed tomography energy range
| Autor: | Marwan Alshipli, M.W. Marashdeh, A.A. Tajuddin, Norlaili A. Kabir, Rokiah Hashim |
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| Rok vydání: | 2018 |
| Předmět: |
Range (particle radiation)
Radiation Materials science biology medicine.diagnostic_test 010308 nuclear & particles physics Attenuation technology industry and agriculture Computed tomography Epoxy Rhizophora biology.organism_classification 01 natural sciences Imaging phantom 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Ct number Hounsfield scale visual_art 0103 physical sciences visual_art.visual_art_medium medicine Composite material |
| Zdroj: | Radiation Physics and Chemistry. 149:41-48 |
| ISSN: | 0969-806X |
| DOI: | 10.1016/j.radphyschem.2018.04.001 |
| Popis: | This study aims to evaluate the attenuation properties of epoxy resin and Rhizophora spp. particleboards bonded with epoxy resin as tissue equivalent phantom materials. The calculated linear and mass attenuation coefficients of epoxy resin and Rhizophora spp. particleboards bonded with three different weight percentages of the epoxy resin (5%, 10% and 15%) were compared with theoretical (XCOM) and experimental measurements of human liver tissue and water at the same energy levels. The 241Am and 109Cd point sources were used to measure the linear and mass attenuation coefficients of the samples at gamma energies; 26.3, 59.5 and 88.0 keV. The computed tomography (CT) scanner was employed to determine the mean attenuation values (CT number) for the fabricated samples and water at CT tube energy 120 kVp. The linear and mass attenuation coefficients of epoxy resin and fabricated Rhizophora spp. particleboard bonded with 15% of epoxy resin provided excellent agreement to the values of XCOM calculated in the human liver tissue and water, respectively. The CT number results showed that the epoxy resin and the Rhizophora spp. particleboard bonded with15% epoxy were in a good agreement with those of human liver tissue and water, respectively. Therefore, the overall attenuation measurements of this study verify the applicability of epoxy resin as a phantom material to mimic the human liver in CT examinations and the epoxy–Rhizophora spp. particleboard fabricated with 15% epoxy resin can be used as a tissue equivalent material corresponding to CT energy range. |
| Databáze: | OpenAIRE |
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