| Autor: |
Samson DO; School of Physics, University Sains Malaysia, Penang 11800, Malaysia.; Department of Physics, Faculty of Science, University of Abuja, Abuja 900211, Nigeria., Shukri A; School of Physics, University Sains Malaysia, Penang 11800, Malaysia., Hashikin NAA; School of Physics, University Sains Malaysia, Penang 11800, Malaysia., Zuber SH; School of Physics, University Sains Malaysia, Penang 11800, Malaysia., Aziz MZA; Advanced Medical and Dental Institute, University Sains Malaysia, Penang 13200, Malaysia., Hashim R; School of Industrial Technology, University Sains Malaysia, Penang 11800, Malaysia., Yusof MFM; School of Health Sciences, University Sains Malaysia, Kota Bharu 16150, Malaysia., Rabaiee NA; Department of Radiology, Kulliyyah of Medicine, International Islamic University, Kuantan 25200, Malaysia., Gemanam SJ; Department of Physics, Benue State University, Makurdi 102119, Nigeria. |
| Abstrakt: |
Background: Different compositions of DSF/NaOH/IA-PAE/ R. spp. composite particleboard phantoms were constructed. Methods: Photon attenuation characteristics were ascertained using gamma rays from 137 Cs and 60 Co. Absorbed doses at the location of an ionization chamber and Gafchromic EBT3 radiochromic films were calculated for high-energy photons (6 and 10 MV) and electrons (6, 9, 12, and 15 MeV). Results: The calculated TPR 20,10 values indicate that the percentage discrepancy for 6 and 10 MV was in the range of 0.29-0.72% and 0.26-0.65%. It was also found that the relative difference in the dmax to water and solid water phantoms was between 1.08-1.28% and 5.42-6.70%. The discrepancies in the determination of PDD curves with 6, 9, 12, and 15 MeV, and those of water and solid water phantoms, ranged from 2.40-4.84%. Comparable results were found using the EBT3 films with variations of 2.0-7.0% for 6 and 10 MV photons. Likewise, the discrepancies for 6, 9, 12, and 15 MeV electrons were within an acceptable range of 2.0-4.5%. Conclusions: On the basis of these findings, the DSF/NaOH/IA-PAE/ R. spp. particleboard phantoms with 15 wt% IA-PAE addition level can be effectively used as alternative tissue-equivalent phantom material for radiation therapy applications. |
