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Scattering of therapeutic radiation in the presence of craniofacial bone reconstruction materials
- Source :
- Journal of Applied Clinical Medical Physics
- Publication Year :
- 2019
- Publisher :
- John Wiley and Sons Inc., 2019.
-
Abstract
- Purpose Radiation scattering from bone reconstruction materials can cause problems from prolonged healing to osteoradionecrosis. Glass fiber reinforced composite (FRC) has been introduced for bone reconstruction in craniofacial surgery but the effects during radiotherapy have not been previously studied. The purpose of this study was to compare the attenuation and back scatter caused by different reconstruction materials during radiotherapy, especially FRC with bioactive glass (BG) and titanium. Methods The effect of five different bone reconstruction materials on the surrounding tissue during radiotherapy was measured. The materials tested were titanium, glass FRC with and without BG, polyether ether ketone (PEEK) and bone. The samples were irradiated with 6 MV and 10 MV photon beams. Measurements of backscattering and dose changes behind the sample were made with radiochromic film and diamond detector dosimetry. Results An 18% dose enhancement was measured with a radiochromic film on the entrance side of irradiation for titanium with 6 MV energy while PEEK and FRC caused an enhancement of 10% and 4%, respectively. FRC‐BG did not cause any measurable enhancement. The change in dose immediately behind the sample was also greatest with titanium (15% reduction) compared with the other materials (0–1% enhancement). The trend is similar with diamond detector measurements, titanium caused a dose enhancement of up to 4% with a 1 mm sample and a reduction of 8.5% with 6 MV energy whereas FRC, FRC‐BG, PEEK or bone only caused a maximum dose reduction of 2.2%. Conclusions Glass fiber reinforced composite causes less interaction with radiation than titanium during radiotherapy and could provide a better healing environment after bone reconstruction.
- Subjects :
- Materials science
Film Dosimetry
Osteoradionecrosis
Glass fiber
chemistry.chemical_element
Biocompatible Materials
Bone and Bones
030218 nuclear medicine & medical imaging
law.invention
Craniofacial Abnormalities
03 medical and health sciences
Polyether ether ketone
chemistry.chemical_compound
0302 clinical medicine
law
Materials Testing
medicine
Peek
Dosimetry
Radiation Oncology Physics
Humans
Scattering, Radiation
Radiology, Nuclear Medicine and imaging
Irradiation
Instrumentation
radiotherapy
Titanium
Photons
Radiation
Phantoms, Imaging
bioglass
respiratory system
Plastic Surgery Procedures
medicine.disease
fiber reinforced composite
chemistry
craniofacial bone reconstruction
030220 oncology & carcinogenesis
Bioactive glass
radiation scattering
Glass
Biomedical engineering
Subjects
Details
- Language :
- English
- ISSN :
- 15269914
- Volume :
- 20
- Issue :
- 12
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Clinical Medical Physics
- Accession number :
- edsair.doi.dedup.....0e7c0e047efc4ec46dd9dffebf337b67