Optimized Voxel Model Construction and Simulation Research in BNCT

LI Gang; DENG Li

Chinese Physics C> 2006, Vol. 30> Issue(2) : 171-177

Optimized Voxel Model Construction and Simulation Research in BNCT

LI Gang ^, ,
DENG Li

Graduate School of China Academe of Engineer Physics, Beijing 100088, China2 Lab. Com. Phy., Institute of Applied Physics and Computational Mathematics, Beijing 100088, China

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Abstract：
The voxel model of Snyder head phantom is widely used in simulation of BNCT. This paper introduces a simplified method which is based upon only four kinds of materials. The new voxel model keeps the mass conservation when the mesh size is small such as 4mm. The 4-material voxel model and 286-material voxel model with different mesh sizes of 16mm, 8mm, 4mm, are simulated respectively by MCNP Monte Carlo code. The results indicate that the 4-material voxel model can reach good accuracy. Using this method, multi-voxels are produced and simulated. Compared to the 4mm single voxel model, the multi-voxel model has good accuracy and less computational time. Finally, we recommend multi-voxel models and a reasonable number of meshes. Its computational time and accuracy have accessed the clinical BNCT requirement.

References

[1]

. Rorer A, Wambersie G Whitmore et al. Current Status of Neutron Capture Therapy. IAEA, 20012. Briesmeister J F. MCNP-A General Monte Carlo Code for N-Particle Transport Code: LA-12625-M. March, 19973. Goorley J T, KigerⅢ W S, Zamenh of R G. Medical Physics, 2002, 29: 145-1564. Marashi M K. Nuclear Instrument and Methods in Physics Research, 2000, A440: 446-4525. ICRU46. International Commission on Radiation Units and Measurement. 1992, Bethesda, MD6. ICRU63. International Commission on Radiation Units and Measurement. 1992, Bethesda, MD

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LI Gang and DENG Li. Optimized Voxel Model Construction and Simulation Research in BNCT[J]. Chinese Physics C, 2006, 30(2): 171-177.

LI Gang and DENG Li. Optimized Voxel Model Construction and Simulation Research in BNCT[J]. Chinese Physics C, 2006, 30(2): 171-177. shu

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Received: 2005-02-02
Revised: 2005-09-27

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沈阳化工大学材料科学与工程学院沈阳 110142

Optimized Voxel Model Construction and Simulation Research in BNCT

LI Gang ^,
DENG Li

Corresponding author: LI Gang,

Graduate School of China Academe of Engineer Physics, Beijing 100088, China2 Lab. Com. Phy., Institute of Applied Physics and Computational Mathematics, Beijing 100088, China

Received Date: 2005-02-02
Accepted Date: 2005-09-27
Available Online: 2006-02-05

Abstract: The voxel model of Snyder head phantom is widely used in simulation of BNCT. This paper introduces a simplified method which is based upon only four kinds of materials. The new voxel model keeps the mass conservation when the mesh size is small such as 4mm. The 4-material voxel model and 286-material voxel model with different mesh sizes of 16mm, 8mm, 4mm, are simulated respectively by MCNP Monte Carlo code. The results indicate that the 4-material voxel model can reach good accuracy. Using this method, multi-voxels are produced and simulated. Compared to the 4mm single voxel model, the multi-voxel model has good accuracy and less computational time. Finally, we recommend multi-voxel models and a reasonable number of meshes. Its computational time and accuracy have accessed the clinical BNCT requirement.