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Mesh-type reference Korean phantoms (MRKPs) for adult male and female for use in radiation protection dosimetry
- Source :
- Physics in Medicine & Biology. 64:085020
- Publication Year :
- 2019
- Publisher :
- IOP Publishing, 2019.
-
Abstract
- In the present study, to overcome the dosimetric limitations of the previous voxel-type reference Korean computational phantoms due to their limited voxel resolutions (i.e. on the order of millimeters) and the nature of voxel geometry, a pair of new reference Korean phantoms, called mesh-type reference Korean phantoms (MRKPs), were developed for the adult male and female in a high-quality/fidelity mesh format. The developed phantoms include all target and source regions required for effective dose calculation, even micrometer-scale target and source regions of the respiratory and alimentary tract organs, skin, urinary bladder, and eye lens. The developed phantoms, which are in either the polygon-mesh (PM) format or the tetrahedral-mesh (TM) format as necessary, can be directly used in several general-purpose Monte Carlo codes (e.g. Geant4, MCNP6, and PHITS) without voxelization. In order to understand the dosimetric impact of the new phantoms, the dose coefficients (=fluence-to-effective dose conversion coefficients) were calculated for photons and electrons with energies ranging from 10 keV to 10 GeV for the anterior-posterior (AP) irradiation geometry and compared with those of the previous voxel-type reference Korean phantoms. The results demonstrate that the effective dose coefficients of the MRKPs were generally similar to those of the previous voxel-type reference phantoms for photons; however, for electrons, significant differences were observed at energies lower than 1 MeV that were mainly due to the explicit definition of the 50 µm-thick radiosensitive target layer in the skin of the new mesh phantoms.
- Subjects :
- Adult
Male
Adult male
Monte Carlo method
Electrons
Radiation Dosage
computer.software_genre
030218 nuclear medicine & medical imaging
03 medical and health sciences
Radiation Protection
0302 clinical medicine
Asian People
Voxel
Humans
Dosimetry
Radiology, Nuclear Medicine and imaging
Eye lens
Physics
Photons
Radiological and Ultrasound Technology
Phantoms, Imaging
business.industry
Alimentary tract
030220 oncology & carcinogenesis
Female
Radiation protection
business
Monte Carlo Method
computer
Dose conversion
Biomedical engineering
Subjects
Details
- ISSN :
- 13616560
- Volume :
- 64
- Database :
- OpenAIRE
- Journal :
- Physics in Medicine & Biology
- Accession number :
- edsair.doi.dedup.....baff66e818466f44f2d6418d510de84c