A Potential-Based Formulation for Motion-Induced Electric Fields in MRI

Zilberti L.; Bottauscio O.; Chiampi M.

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A Potential-Based Formulation for Motion-Induced Electric Fields in MRI

机译：MRI中运动感应电场的基于势的公式化

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This paper presents a potential-based formulation conceived to estimate the electric field induced in a human body moving through the stray stationary magnetic field produced by magnetic resonance scanners. Two different descriptions are adopted, giving rise to two different driving terms, and the corresponding electromagnetic problems are solved numerically, according to a finite element approach. The application of the procedure recommended by the International Commission on Non-Ionizing Radiation Protection guidelines to perform the exposure assessment is discussed, and some examples, which refer to a realistic situation, are finally presented.

机译：本文提出了一种基于电势的公式，旨在估算通过磁共振扫描仪产生的杂散平稳磁场在人体中感应的电场。根据有限元方法，采用两种不同的描述，产生两种不同的驱动项，并在数值上解决了相应的电磁问题。讨论了国际非电离辐射防护委员会指南建议的程序在进行暴露评估中的应用，并最终给出了一些实例，这些实例均涉及实际情况。

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来源
《Magnetics, IEEE Transactions on》 |2016年第3期|1-4|共4页
作者
Zilberti L.; Bottauscio O.; Chiampi M.;
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作者单位

Istituto Nazionale di Ricerca Metrologica, Turin, Italy;

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原文格式 PDF
正文语种 eng
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关键词
Finite element (FE) method; Finite element method; Human exposure; Magnetic resonance imaging; Motion induced electric field; human exposure; magnetic resonance imaging (MRI); motion-induced electric field;

机译：有限元（FE）方法;有限元方法;人体暴露;磁共振成像;运动感应电场;人体暴露;磁共振成像（MRI）;运动感应电场;

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1. A numerical survey of motion-induced electric fields experienced by MRI operators [J] . ZilbertiL., ChiampiM. Health Physics: Official Journal of the Health Physics Society . 2013,第6期

机译：MRI操作员经历的运动感应电场的数值调查
2. Assessment of Exposure to MRI Motion-Induced Fields Based on the International Commission on Non-Ionizing Radiation Protection (ICNIRP) Guidelines [J] . Zilberti Luca, Bottauscio Oriano, Chiampi Mario Magnetic resonance in medicine: official journal of the Society of Magnetic Resonance in Medicine . 2016,第4期

机译：根据国际非电离辐射防护委员会（ICNIRP）指南评估MRI运动感应场的暴露
3. COMPENSATION OF MOTION-INDUCED NOISE FOR AN ELECTRIC-FIELD-STRENGTH SENSOR ELECTRODE IN SEAWATER [J] . V. G. Maksimenko Measurement techniques . 2019,第1期

机译：海水中电场强度传感器电极的运动诱导噪声的补偿
4. A potential-based formulation for motion-induced electric field in MRI [C] . Oriano Bottauscio, Mario Chiampi, Luca Zilberti International Conference on the Computation of Electromagnetic Fields . 2016

机译：MRI中运动诱导电场的基于潜在的制剂
5. Steering Electromagnetic Fields in MRI: Investigating Radiofrequency Field Interactions with Endogenous and External Dielectric Materials for Improved Coil Performance at High Field [D] . Vaidya, Manushka. 2017

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6. A Method to Separate Conservative and Magnetically-Induced Electric Fields in Calculations for MRI and MRS in Electrically-small Samples [O] . BuSik Park, Andrew G. Webb, Christopher M. Collins -1

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7. An analytical formulation in 3D domain for the nonlinear response of piezoelectric slabs under weak electric fields [O] . SAMAL, MK, SESHU, P, DUTTA, BK 2007

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8. Least-Squares Minimising Finite-Element Formulation for Static and Stationary211 Electric and Magnetic Fields [R] . Lager, I. E., Mur, G. 1997

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A Potential-Based Formulation for Motion-Induced Electric Fields in MRI

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