论文信息 - Experimental Setup to Compare Measurements and Numerical Simulations in Magnetic Resonance Imaging RF Dosimetry

Experimental Setup to Compare Measurements and Numerical Simulations in Magnetic Resonance Imaging RF Dosimetry

Many of the parameters associated with the magnetic resonance imaging (MRI) coils are estimated by means of numerical simulations. Taking into account the unavoidable numerical approximations and imperfections of the models, an experimental validation of the theoretical results becomes essential. This paper describes two measuring setups which allow the comparison between measurements of electromagnetic fields and the same quantities computed numerically. The experimental activity highlighted some critical aspects of the numerical results that could bring to a wrong estimation of the parameters associated with the MRI coils. Results show the importance and feasibility of a dosimetry experimental setup suitable for MRI coils characterization.

[1] J W Hand,et al. Assessment of computational tools for MRI RF dosimetry by comparison with measurements on a laboratory phantom. , 2015, Physics in medicine and biology.

[2] Luigi M. Millanta,et al. Analysis of the common-mode rejection in the measurement and generation of magnetic fields using loop probes , 2004, IEEE Transactions on Instrumentation and Measurement.

[3] M. Borsero,et al. Validation of numerical methods for electromagnetic dosimetry through near-field measurements , 2015 .

[4] W N Hanafee,et al. Magnetic resonance imaging artifacts: mechanism and clinical significance. , 1986, Radiographics : a review publication of the Radiological Society of North America, Inc.

[5] Terry O. Woods,et al. New Developments in Standards for MRI Safety Testing of Medical Devices , 2016, Current Radiology Reports.

[6] D. Giordano,et al. Experimental set-up to compare measurements and numerical simulations in Magnetic Resonance Imaging RF dosimetry , 2016, 2016 Conference on Precision Electromagnetic Measurements (CPEM 2016).

[7] R. W. Lau,et al. The dielectric properties of biological tissues: II. Measurements in the frequency range 10 Hz to 20 GHz. , 1996, Physics in medicine and biology.