The effect of finite-difference time-domain resolution and power-loss computation method on SAR values in plane-wave exposure of Zubal phantom

Uusitupa TM; Ilvonen SA; Laakso IM; Nikoskinen KI

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The effect of finite-difference time-domain resolution and power-loss computation method on SAR values in plane-wave exposure of Zubal phantom

机译：有限差分时域分辨率和功率损耗计算方法对Zubal体模平面波曝光中SAR值的影响

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摘要

In this paper, the anatomically realistic body model Zubal is exposed to a plane wave. A finite-difference time-domain (FDTD) method is used to obtain field data for specific-absorption-rate (SAR) computation. It is investigated how the FDTD resolution, power-loss computation method and positioning of the material voxels in the FDTD grid affect the SAR results. The results enable one to estimate the effects due to certain fundamental choices made in the SAR simulation.

机译：在本文中，解剖学逼真的人体模型Zubal暴露于平面波。有限差分时域（FDTD）方法用于获取现场数据，以进行比吸收率（SAR）计算。研究了FDTD分辨率，功率损耗计算方法以及FDTD网格中材料体素的位置如何影响SAR结果。结果使人们能够估计由于SAR模拟中做出的某些基本选择而产生的影响。

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《Physics in medicine and biology.》 |2008年第2期|共8页
作者
Uusitupa TM; Ilvonen SA; Laakso IM; Nikoskinen KI;
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原文格式 PDF
正文语种 eng
中图分类医用一般科学;
关键词
DIELECTRIC-PROPERTIES; BIOLOGICAL TISSUES; ABSORPTION RATE; 3 GHZ; MHZ; BODY; MODELS;

机译：介电常数;生物组织;吸收率;3 GHZ;MHZ;主体;模型;

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专利

1. The effect of finite-difference time-domain resolution and power-loss computation method on SAR values in plane-wave exposure of Zubal phantom [J] . Uusitupa TM, Ilvonen SA, Laakso IM, Physics in medicine and biology. . 2008,第2期

机译：有限差分时域分辨率和功率损耗计算方法对Zubal体模平面波曝光中SAR值的影响
2. DOSIMETRIC COMPARISON OF MONTE CARLO CODES (EGS4, MCNP, MCNPX) CONSIDERING EXTERNAL AND INTERNAL EXPOSURES OF THE ZUBAL PHANTOM TO ELECTRON AND PHOTON SOURCES [J] . S. Chiavassa, A. Lemosquet, I. Aubineau-Laniece, Radiation Protection Dosimetry . 2005,第1a4期

机译：蒙特卡洛编码（EGS4，MCNP，MCNPX）的局部比较，其中考虑了楚巴幻影对电子和光子源的外部和内部暴露
3. Computation of Fields and sar for mri with Finite-difference, Time-domain Software [J] . Christopher Penny Microwave Journal . 2007,第12期

机译：使用时域有限差分软件计算mri的场和sar
4. Truncation of computational domain for finite-difference methods in time-domain electromagnetics: efficient solution of the problem [C] . Perov, A.O., Sirenko, . 2001

机译：时域电磁学中有限差分方法的计算域截断：问题的有效解决方案
5. Finite-difference time-domain modeling of a waveguide-based radio frequency exposure system for studying nonthermal effects on catecholamine release from chromaffin cells: Characterization and optimization. [D] . Hagan, Todd. 2005

机译：基于波导的射频暴露系统的有限差分时域建模，用于研究对嗜铬细胞释放儿茶酚胺的非热效应：表征和优化。
6. Numerical Analysis of H-PDLC Using the Split-Field Finite-Difference Time-Domain Method [O] . Sergio Bleda, Jorge Francés, Sergi Gallego, 2018

机译：H-PDLC的裂域有限差分时域法数值分析
7. Modelling and analysis of complex electromagnetic problems using FDTD subgridding in hybrid computational methods. Development of hybridised Method of Moments, Finite-Difference Time-Domain method and subgridded Finite-Difference Time-Domain method for precise computation of electromagnetic interaction with arbitrarily complex geometries. [O] . Ramli Khairun Nidzam 2011

机译：在混合计算方法中使用FDTD子网格对复杂电磁问题进行建模和分析。矩量混合方法，有限差分时域方法和细分的有限差分时域方法的发展，用于精确计算具有任意复杂几何形状的电磁相互作用。
8. Comparison of Finite-Difference Time-Domain SAR Calculations with Measurements in a Heterogeneous Model of Man [R] . Spiegel, R. J., Fatmi, M. B. A., Stuchly, S. S., 1989

机译：有限差分时域saR计算与人类异构模型测量的比较

The effect of finite-difference time-domain resolution and power-loss computation method on SAR values in plane-wave exposure of Zubal phantom

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