Abstract
The mass attenuation coefficient (MAC), effective atomic number (Zeff), equivalent atomic number (Zeq), fast neutron removal cross-section (FNRCS), energy absorption buildup factor (EABF), mass-energy absorption coefficient (MenAC), relative kerma, and computed tomography (CT) numbers were calculated for the alginates, bisphenol A-glycidyl methacrylate (Bis-GMA), chitin, hyaluronic acid, polycaprolactone (PCL), polyether ether ketone (PEEK), polyethylene glycol (PEG), polyglycolide (PGA), polylactic acid (PLA), poly lacto-co-glycolic acid (PLGA), poly methyl methacrylate (PMMA), poly vinyl alcohol (PVA), polyvinylpyrrolidone (PVP), triethylene glycol dimethacrylate (TEGDMA), and urethane dimethacrylate (UDMA) polymers using the Phy-X/PSD and Py-MLBUF software. The total stopping power (TSP) of electrons, protons, and alpha particles was calculated for the selected polymers using the ESTAR, PSTAR, and ASTAR programs. The effective atomic number for absorption and charged particle (electron, proton, alpha, and carbon ion) interactions were estimated for the selected polymers using Phy-X/ZeXTRa software. The FNRCS values of Bis-GMA, PCL, PEG, PMMA, and PVP were similar to those of the human tissues. For the selected polymers, the Zeff values for electron, proton, alpha, and carbon ion interactions of PCL, PEG, PLGA, and PVA were similar to those of human tissues, except for the cortical bone, across the entire energy range. These results are expected to assist in selecting suitable polymers as tissue-equivalent materials in the desired energy range for photon, neutron, and charged-particle interactions. This study is expected to be useful for radiation therapy and dosimetry.
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Abbreviations
- ASTAR:
-
Stopping power and range tables for alpha ions
- Bis-GMA:
-
Bisphenol A-glycidyl methacrylate
- CT:
-
Computed tomography
- EABF:
-
Energy absorption buildup factor
- ESTAR:
-
Stopping power and range tables for electrons
- FNRCS:
-
Fast neutron removal cross-section
- MAC:
-
Mass attenuation coefficient
- MenAC:
-
Mass energy absorption coefficient
- PCL:
-
Polycaprolactone
- PEEK:
-
Polyether ether ketone
- PEG:
-
Polyethylene glycol
- PGA:
-
Polyglycolide
- Phy-X/PSD:
-
Photon shielding dosimetry
- Phy-X/ZeXRTa:
-
ZEff of materials for X-type radiation attenuation
- PLA:
-
Polylactic acid
- PLGA:
-
Poly lacto-co-glycolic acid
- PMMA:
-
Poly methyl methacrylate
- PSTAR:
-
Stopping power and range tables for protons
- PVA:
-
Poly vinyl alcohol
- PVP:
-
Polyvinylpyrrolidone
- Py-MLBUF:
-
Python-multilayer buildup factor
- TEGDMA:
-
Triethylene glycol dimethacrylate
- UDMA:
-
Urethane dimethacrylate
- TSP:
-
Total stopping power
- Z eff :
-
Effective atomic number
- Z eq :
-
Equivalent atomic number
- Z PEA :
-
Effective atomic number for photon energy absorption
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Acknowledgements
NMB thanks the KLE Technological University, Hubballi, India, for funding the capacity-building projects, and for appointing GBH has a research associate in the project.
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Conceptualization: GBH; methodology: GBH, NMB; formal analysis and Investigation: GBH; writing—original draft: GBH; writing—review and editing: NMB, NHA, VPS; resources: NHA; validation: VPS; supervision: NMB.
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Hiremath, G.B., Singh, V.P., Ayachit, N.H. et al. Investigation of the nuclear radiation interaction parameters of selected polymers for radiation therapy and dosimetry. Radiol Phys Technol 16, 168–185 (2023). https://doi.org/10.1007/s12194-023-00704-7
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DOI: https://doi.org/10.1007/s12194-023-00704-7