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ELECTRIC FIELD MEASUREMENT USING MRI - UTEE

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<strong>ELECTRIC</strong> <strong>FIELD</strong> <strong>MEASUREMENT</strong> <strong>USING</strong> <strong>MRI</strong><br />

P. Fiala 1 , K. Bartusek 2 , J. Mikulka 3<br />

1,3<br />

Department of Theoretical and Experimental Electrical Engineering, University of<br />

Technology Brno, Kolejni 4, 612 00 Brno, tel. +420541149510, fax. +420541149512,<br />

www.feec.vutbr.cz/utee, fialap@feec.vutbr.cz, xmikul16@stud.feec.vutbr.cz<br />

2 Institute of Scientific Instruments, Academy of Sciences of the Czech Republic,<br />

Královopolská 147, 612 64 Brno, Czech Republic bar@isibrno.cz,<br />

http://www.feec.vutbr.cz/<strong>UTEE</strong>, http://www.isibrno.cz<br />

ABSTRACT: The paper describes a test of an electric field on water molecules<br />

based on the present knowledge of the problem as discussed by references [6]-<br />

[11]. The basic configuration of the test was experimentally verified at the<br />

Institute of Scientific Instruments, Academy of Sciences of the Czech Republic.<br />

We also prepared other tests using a different type of substance to find the relation<br />

between the <strong>MRI</strong> and the macroscopic electric field intensity. As a matter of fact,<br />

it respects the classical Electrodynamics and Material Wave Theory (MWT). The<br />

experiments are intended for future applications in the field of health service.<br />

1 INTRODUCTION<br />

In recent years the research in this field has been focused on the search of different ways of<br />

treating various types of diseases like tumors, viruses, and other micro- and nanoscopic<br />

problems [1],[2]. The papers referred to in this study analyze the impact of an external electric<br />

field application on the development and persistence of tumor diseases. For example, paper<br />

[3] analyzes - depending on the effect of external influences, namely electromagnetic fields -<br />

the mechanisms of emergence of a cell and its uncontrolled development phase. The research<br />

carried out by the laboratory specialists of Norfolk University, USA [4], [5] features the<br />

analysis of the impact of impulse electromagnetic fields on tissue structure changes, genetic<br />

code changes, and the types of controlled variation in selected parts of an organism. The basic<br />

experiments and studies of the impact of electric and electromagnetic fields on the<br />

development of tumor diseases have been presented by prof. Kikuchi [6]. The previous<br />

published studies [2], however, had not entirely respected the complex electro- magnetohydro-<br />

dynamic (EMHD) principles of approach. According to the data available, the phases<br />

of a tumor disease development are classified into four stages as related to the status of a cell.<br />

The first two of these stages are reversible; within the remaining ones, however, distinctive<br />

changes in the cell metabolism are recorded and, given the standard weak EMHD effects in<br />

the latter two stages, the principles of cell change become irreversible. The research<br />

conducted by Norfolk University is markedly oriented toward analyzing the latter two stages<br />

in the development of a cell within a tumor formation. In comparison with this research<br />

orientation, we have focused our research distinctly on the former two development stages.<br />

The elementary approach to the problem consists in finding a suitable numerical model to<br />

analyze the impact of an electromagnetic field on the basic chemical structure elements.


Within the process of numerical analysis, we perform the testing of the impact of an electric<br />

field on a small volume of purified homogeneous H 2 O water. In this respect, the<br />

interdependence is sought between the impacts of size, direction, and instantaneous course of<br />

the electric field intensity on the molecular properties of the material (water). Further,<br />

experiments are performed using the Nuclear Magnetic Resonance (NMR) and the Magnetic<br />

Resonance Imaging (<strong>MRI</strong>), and the shift and variation of the spectral line of the examined<br />

sample are monitored. In the process of the verification of laws resulting from the MWT and<br />

the available plus verifiable theories [7]-[13], the procedure of an electric field impact<br />

analysis will be directed toward more complex organic structures. The elementary findings of<br />

the sample status in the NMR testing are further completed with numerical analysis [13].<br />

2 <strong>MRI</strong> EXPERIMENTS<br />

In order to set the NMR method, both the impacts thereof on the resulting image and the<br />

material in-homogeneity impact on the processing of the NMR image were examined and<br />

numerically modeled [15]. Further, to support the analysis of the impact of an electric field<br />

depending on the instantaneous value and size of electric field E intensity on the samples that<br />

can be located close to the operator, we developed special controlled voltage sources with<br />

output voltage regulation of U out =1-100kV and current limitation (to the value of current<br />

manageable by a human organism) within the range of I out 0-1mA. Figs. 1 and 2 show the<br />

conception of the controlled, high-voltage source. This problem is analyzed in greater detail<br />

by the [14] reference study.<br />

Fig.1 A High Voltage source compact conception - the model, the scheme and the experimental measurement<br />

This work deals with the design of an electronically controlled high-voltage power source<br />

used for special purposes. The source will be used to set up the intensity of an electric field on<br />

predefined shapes of material samples, from simple inorganic to complex organic materials.<br />

The design must fulfill the condition of a constant setting of the source's output current. The<br />

regulation ranges should be: output voltage U o =1-100kV, electric current I max =10µA-10mA,<br />

frequency f=0-1kHz. The device must satisfy safety requirements specified by Czech<br />

standards (ČN). Several designs have been prepared on the basis of available materials, and


one was selected and realized: a circuit with an offline fly-back regulator, regulated with<br />

pulse-width modulation frequency f m =30 kHz. The power source was realized and its<br />

specifications were experimentally verified. The electronic control wiring diagram of the<br />

high-voltage source with current limitation is shown in fig. 3. The numerical analysis results<br />

were experimentally verified using the 200 MHz/75 mm MR tomograph at the ISI, AS CR (fig. 9).<br />

The tomograph elementary magnetic field B 0 = 4,7000 T is generated by a superconducting horizontal<br />

magnet produced by the Magnex Scientific company. The resonance frequency for the cores 1 H is<br />

200 MHz. From the measurements performed using the <strong>MRI</strong> we obtained the results of the electric<br />

field intensity E impact on the cores of the H 2 O sample; an overview of these results is provided in<br />

tab. 1. Further, experiments were carried out on the H 2 O sample using a device with a system of<br />

electrodes. There was a distance of 20mm between the electrodes, which were fixed to a laboratory<br />

beaker containing the water sample. The fixation was realized in such a manner as to eliminate the<br />

displacement current effects on all the surfaces and dielectric volumes. Leakage current was secured,<br />

with the resulting assurance of operator safety. Then, the first measurement without the electric field<br />

intensity E impact on the examined sample showed the centre on the frequency of f 0 =184Hz. After<br />

connecting voltage to the electrodes and producing the electric field intensity of 50kV/m-4050kV/m,<br />

we managed repeatedly to measure the resonance line shift of ∆f = 4 Hz. Thus, the influence was<br />

experimentally proved of the electric field static intensity on the motion and behavior of water<br />

molecule cores. According to the well-known relation between the change of frequency and the<br />

change of magnetic induction [15], the change of magnetic induction is<br />

Fig.2 High Voltage source component conception and one module of the source<br />

Fig.3 High Voltage source diagram of electronic control


2π<br />

∆f<br />

2π<br />

∆f<br />

∆ B = = (1)<br />

8<br />

γ 2,6710<br />

where f [Hz] is the frequency, γ [T -1 .s -1 ] is the gyro-magnetic ratio of water, and ∆B [T] is<br />

the change of magnetic flux density module distribution in the sample. Then, the change of<br />

magnetic induction corresponds with ∆B= 94.1 nT.<br />

Tab. 1 The measured resonance frequency shifts<br />

Electric Field Intensity Ez [kV/m]<br />

Resonance frequency offset<br />

[Hz]<br />

+4050 +4<br />

+2025 +4<br />

0 0<br />

-2025 +3<br />

-4050 +3<br />

Fig. 4 Elementary configuration<br />

of the MR magnet for the<br />

200MHz tomograph, ISI ASCR<br />

Fig.5 MR experimental workplace and equipment


20 15 10 5 0 -5 -10 -15 -20<br />

∆f=4Hz<br />

Fig. 6. The measured spectral characteristics of the water sample, ∆f = 4 Hz (resonance frequency<br />

without the electric field is f 0 =184 Hz)<br />

3 CONCLUSION<br />

The presented paper contains the results of experiments analyzing the impact of an electric<br />

(static) field on the behaviour of elementary compounds cores. The study represents a step<br />

forward in the analysis of the more complex chemical substances behaviour as related to the<br />

impact of an electric field. The results of EMHD theories were taken into account in studying<br />

the task, and an MWT-based model was used for the numerical support thereof.<br />

6 ACKNOWLEDGMENTS<br />

The research described in the paper were financially supported by FRVŠ by research plan<br />

No. MSM 0021630516, ELCOM-No. MSM 0021630513 , grant GAAV No. B208130603 and<br />

prof. H. Kikuchi for the consultations and advises.<br />

7 REFERENCES<br />

[1] Schoelkopf R.J, Girvin S.M "Wiring up quantum systems", NATURE, The<br />

international weekly journal of science, 7-th of February 2008<br />

[2] The European Journal of Surgery, Supplement 574, Proceedings of the IABC<br />

International association for Biologically closed electric circuits (BCEC) in Medicine<br />

and Biology, Scandinavian University press, Oslo-Cpenhagen-Stockholm, 1994<br />

[3] Daivid E. Effectiveness and risk during application of NLW from the medical point of<br />

view, Non-lethal options enhancing security and stability, 3 rd European Symposium on<br />

Non-lethal Weapons , May 10-12, 2005, Ettlingen, SRN<br />

[4] Tammo Heeren, J. Thomas Camp, Juergen F. Kolb, Karl H. Schoenbach, Sunao<br />

Katsuki, and Hidenori Akiyama, 250 kV Subnanosecond Pulse Generator with<br />

Adjustable Pulsewidth, IEEE Trans. Diel. Electr. Insul. 14, pp. 884-888 (2007).<br />

[5] Y. Sun, S. Xiao, J. A. White, J. F. Kolb, M. Stacey, and K H. Schoenbach, Compact,<br />

Nanosecond, High Repetition-Rate, Pulse Generator for Bioelectric Studies, IEEE<br />

Trans. Diel. Electr. Insul. 14, pp. 863-870 (2007).


[6] Kikuchi, H. Electro-Plasma Macrostructure and Functioning of a Mono-Cancer-<br />

Tumor or Scatered Fine-Grained Tumors Analogous to a Dust Grain or Grains in<br />

Dusty Plasmas PIERS 1999, March, USA, 1999.<br />

[7] van Vlaenderen K.J. and A.Waser,“Electrodynamics with the scalar field,” Physics,<br />

Vol.2, 1-13, 2001.<br />

[8] Kikuchi H Electrohydrodynamics in dusty and dirty plasmas, gravito-electrodynamics<br />

and EHD, Kluwer academic publishers, Dordrecht/Boston/London, 2001.<br />

[9] van Vlaenderen K.J. A charge space as the orogin of sources, fields and potentials,<br />

Physics, arXiv:physics/9910022 v1 16 Oct 1999, 1-13, 1999.<br />

[10] Hofer W.A. “A charge space as the origin of sources, fields and potentials,” Physics,<br />

arXiv: quant-ph/ 9611009 v3 17 Apr 1997, 1997.<br />

[11] Prosser V a kolektiv . Experimentální metody biofyziky, Academia, Praha, 1989.<br />

Delong A. “Verbal information” Czech Academy of Science, ISI Brno, 7.2.2006 Brno,<br />

2006.<br />

[12] Bartusek K.-Fiala P. A simple numerical simulation of internal structure of particles<br />

test PIERS 2007, BEIJING, China, 2007.<br />

[13] FIALA, J. Special electronics controlled HV sources, Diploma Thesis, Brno: FEEC<br />

BUT v Brno, Czech Republic, 2007. pp73.<br />

[14] Bartusek K.-Fiala P. Experiments with the effect of non-homogenous parts into<br />

materials PIERS 2008, Hangzhou, March, China, 2008.

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