New calculation method for 3D dose distribution in tetrahedral-mesh phantoms in Geant4
- Title
- New calculation method for 3D dose distribution in tetrahedral-mesh phantoms in Geant4
- Author
- 김찬형
- Keywords
- Tetrahedral-mesh; Computational phantom; 3D dose distribution; Monte Carlo; Geant4
- Issue Date
- 2019-10
- Publisher
- ELSEVIER SCI LTD
- Citation
- PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS, v. 66, Page. 97-103
- Abstract
- The tetrahedral-mesh (TM) geometry, which is a very promising geometry for computational human phantoms, has a limitation in 3D dose distribution calculation for medical applications. Even though Geant4 provides the read-out geometry for calculating 3D dose distribution in the TM geometry, this method significantly slows down the computation speed. In the present study, we developed a new method, called Moving Voxel-based Dose-Distribution Calculator (MVDDC), to rapidly calculate a 3D dose distribution in a TM geometry. To evaluate the performance of the MVDDC method, a simple TM cubic phantom and a human phantom were implemented in Geant4. Subsequently, the phantoms were irradiated with proton spot beams under various conditions, and the obtained results were compared with those of the read-out geometry method. The results show that there is no significant difference between the dose distributions calculated using the new method and the read-out geometry method. With respect to the computational performance, the speeds of simulations using the MVDDC were approximately 1.4-2.7 times faster than those of the simulations using the read-out geometry method.
- URI
- https://www.sciencedirect.com/science/article/pii/S1120179719304466?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/154596
- ISSN
- 1120-1797; 1724-191X
- DOI
- 10.1016/j.ejmp.2019.09.239
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > NUCLEAR ENGINEERING(원자력공학과) > Articles
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