| Citation: | WANG Ye, TAN Chao, DONG Fenget al. Magnetic induction tomography system with multi-excitation frequency mode[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(11): 2331-2337. doi: 10.13700/j.bh.1001-5965.2017.0048(in Chinese)
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Magnetic induction tomography (MIT) has promising applications in biomedical examination and diagnosis. In order to acquire biological tissue characteristic information, a magnetic induction tomography system with multi-excitation frequency mode is designed. The system operates under voltage excitation and voltage measurement mode, and it can select three excitation frequency modes of single frequency, sweep frequency and mixed frequency from 100 kHz to 4 MHz. The system includes excitation source module, sensor coil array, data acquisition and conditioning module, and digital demodulation module, and it uses field-programmable gate array(FPGA) to control multiplexer, programmable amplifier, analog-digital converter and so on. The simulation experiments show that the test data acquired by the system with multi-excitation frequency mode has good consistency, its signal to noise ratio is above 46 dB, and voltage difference acquired at different excitation frequencies can be used to realize the image reconstruction of measured object conductivity distribution.
| [1] |
GRIFFITHS H.Magnetic induction tomography[J].Measurement Science & Technology, 2001, 12(8):1126-1131.
|
| [2] |
TARJAN P P, MCFEE R.Electrodeless measurements of the effective resistivity of the human torso and head by magnetic induction[J].IEEE Transactions on Bio-medical Engineering, 1968, 15(4):266-278. https://miami.pure.elsevier.com/en/publications/electrodeless-measurements-of-the-effective-resistivity-of-the-hu
|
| [3] |
徐征, 何为, 何传红, 等.生物组织电导率磁感应测量原理及系统研究[J].仪器仪表学报, 2008, 29(9):1878-1882. http://d.wanfangdata.com.cn/Periodical/yqyb200809017
XU Z, HE W, HE C H, et al.Study on the principles and system of measurement biological tissue conductivity with magnetic induction method[J].Chinese Journal of Scientific Instrument, 2008, 29(9):1878-1882(in Chinese). http://d.wanfangdata.com.cn/Periodical/yqyb200809017
|
| [4] |
KORJENEVSKY A, CHEREPENIN V, SAPETSKY S.Magnetic induction tomography:Experimental realization[J].Physiological Measurement, 2000, 21(1):89-94. doi: 10.1088/0967-3334/21/1/311
|
| [5] |
王聪, 秦明新, 董秀珍, 等.磁感应方式电导率测量基础研究[J].中国医学物理学杂志, 2004, 21(3):182-185. http://d.wanfangdata.com.cn/Periodical/zgyxwlxzz200403019
WANG C, QIN M X, DONG X Z, et al.The basic research of the measurement of conductivity in a magnetic induction way[J].Chinese Journal of Medical Physics, 2004, 21(3):182-185(in Chinese). http://d.wanfangdata.com.cn/Periodical/zgyxwlxzz200403019
|
| [6] |
NETZ J, FORNER E, HAAGEMANN S.Contactless impedance measurement by magnetic induction-A possible method for investigation of brain impedance[J].Physiological Measurement, 1993, 14(4):463-471. doi: 10.1088/0967-3334/14/4/007
|
| [7] |
刘浩仟. 电磁层析成像系统的软硬件设计[D]. 沈阳: 辽宁大学, 2015. http://cdmd.cnki.com.cn/Article/CDMD-10140-1015417823.htm
LIU H Q.Hardware and software design of electromagnetic tomography system[D].Shenyang:Liaoning University, 2015(in Chinese). http://cdmd.cnki.com.cn/Article/CDMD-10140-1015417823.htm
|
| [8] |
刘泽, 何敏, 徐苓安, 等.多激励模式的电磁层析成像系统[J].仪器仪表学报, 2001, 22(6):614-617. http://d.wanfangdata.com.cn/Periodical/yqyb200106019
LIU Z, HE M, XU L A, et al.Multi-mode excitation electromagnetic tomography system[J].Chinese Journal of Scientific Instrument, 2001, 22(6):614-617(in Chinese). http://d.wanfangdata.com.cn/Periodical/yqyb200106019
|
| [9] |
ROSELL-FERRER J, MERWA R, BRUNNER P, et al.A multifrequency magnetic induction tomography system using planar gradiometers:Data collection and calibration[J].Physiological Measurement, 2006, 27(5):S271-S280. doi: 10.1088/0967-3334/27/5/S23
|
| [10] |
WANG C, ZHANG J Q, LI F W, et al.Design of a non-magnetic shielded and integrated electromagnetic tomography system[J].Measurement Science and Technology, 2011, 22(10):1-10. http://cdmd.cnki.com.cn/Article/CDMD-10140-1015417823.htm
|
| [11] |
JIN G, SUN J, QIN M, et al.A new method for detecting cerebral hemorrhage in rabbits by magnetic inductive phase shift[J].Biosensors and Bioelectronics, 2014, 52:374-378. doi: 10.1016/j.bios.2013.09.019
|
| [12] |
WATSON S, WILLIAMS R J, GOUGH W, et al.A magnetic induction tomography system for samples with conductivities below 10 Sm-1[J].Measurement Science & Technology, 2008, 19(4):88-91.
|
| [13] |
WEI H Y, SOLEIMANI M.Hardware and software design for a national instrument-based magnetic induction tomography system for prospective biomedical applications[J].Physiological Measurement, 2012, 33(5):863-879. doi: 10.1088/0967-3334/33/5/863
|
| [14] |
VAUHKONEN M, HAMSCH M, IGNEY C H.A measurement system and image reconstruction in magnetic induction tomography[J].Physiological Measurement, 2008, 29(6):S445-S454. doi: 10.1088/0967-3334/29/6/S37
|
| [15] |
SMITH R W M, FREESTON I L, BROWN B H.A real-time electrical impedance tomography system for clinical use-design and preliminary results[J].IEEE Transactions on Biomedical Engineering, 1995, 43(2):133-140. https://www.ncbi.nlm.nih.gov/pubmed/7868140
|
| [16] |
ZOLGHARNI M, GRIFFITHS H, LEDGER P D.Frequency-difference MIT imaging of cerebral haemorrhage with a hemispherical coil array:Numerical modelling[J].Physiological Measurement, 2010, 31(8):S111-S125. doi: 10.1088/0967-3334/31/8/S09
|
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